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Stauffer N, Knecht S, Badertscher P, Krisai P, Hennings E, Serban T, Voellmin G, Osswald S, Sticherling C, Kühne M. Repeat catheter ablation after very late recurrence of atrial fibrillation after pulmonary vein isolation. Europace 2024; 26:euae096. [PMID: 38607938 PMCID: PMC11068271 DOI: 10.1093/europace/euae096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024] Open
Abstract
AIMS Atrial fibrillation (AF) recurs in about one-third of patients after catheter ablation (CA), mostly in the first year. Little is known about the electrophysiological findings and the effect of re-ablation in very late AF recurrences (VLR) after more than 1 year. The aim of this study was to determine the characteristics and outcomes of the first repeat CA after VLR of AF after index CA. METHODS AND RESULTS We analysed patients from a prospective Swiss registry that underwent a first repeat ablation procedure. Patients were stratified depending on the time to recurrence after index procedure: early recurrence (ER) for recurrences within the first year and late recurrence (LR) if the recurrence was later. The primary endpoint was freedom from AF in the first year after repeat ablation. Out of 1864 patients included in the registry, 426 patients undergoing a repeat ablation were included in the analysis (28% female, age 63 ± 9.8 years, 46% persistent AF). Two hundred and ninety-one patients (68%) were stratified in the ER group and 135 patients (32%) in the LR group. Pulmonary vein reconnections were a common finding in both groups, with 93% in the ER group compared to 86% in the LR group (P = 0.052). In the LR group, 40 of 135 patients (30%) had a recurrence of AF compared to 90 of 291 patients (31%) in the ER group (log-rank P = 0.72). CONCLUSION There was no association between the time to recurrence of AF after initial CA and the characteristics and outcomes of the repeat procedure.
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Affiliation(s)
- Niklas Stauffer
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Sven Knecht
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Patrick Badertscher
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Philipp Krisai
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Elisa Hennings
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Teodor Serban
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Gian Voellmin
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Stefan Osswald
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Christian Sticherling
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
| | - Michael Kühne
- Department of Cardiology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland
- Cardiovascular Research Institute Basel, University Hospital Basel, Spitalstrasse 2, 4056 Basel, Switzerland
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Hayashi T, Hamada K, Iwasaki K, Takada J, Murakami M, Saito S. Difference in tissue temperature change between two cryoballoons. Open Heart 2023; 10:e002426. [PMID: 38065585 PMCID: PMC10711899 DOI: 10.1136/openhrt-2023-002426] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/11/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Cryoballoon ablation, especially Arctic Front Advance Pro (AFA-Pro) (Medtronic, Minneapolis, Minnesota, USA), has been widely recognised as a standard approach to atrial fibrillation (AF). Recently, Boston Scientific has released a novel cryoballoon system (POLARx). Despite comparable acute clinical outcomes of these two cryoballoons, the recent study reported a higher complication rate, especially for phrenic nerve palsy, with POLARx. However, their impact on biological tissue remains unclear. OBJECTIVE The purpose of our study is to evaluate temperature change of biological tissue during cryoablation of each cryoballoon using a porcine experimental model. METHOD A tissue-based pulmonary vein model was constructed from porcine myocardial tissue and placed on a stage designed to simulate pulmonary vein anatomy and venous flow. Controlled cryoablations of AFA-Pro and POLARx were performed in this model to evaluate the tissue temperature. A temperature sensor was set behind the muscle and cryoballoon ablation was performed after confirming the occlusion of pulmonary vein with cryoballoon. RESULTS The mean tissue nadir temperature during cryoablation with AFA-Pro was -41.5°C±4.9°C, while the mean tissue nadir temperature during cryoablation with POLARx was -58.4°C±5.9°C (p<0.001). The mean balloon nadir temperature during cryoablation with AFA-Pro was -54.6°C±2.6°C and the mean balloon nadir temperature during cryoablation with POLARx was -64.7°C±3.8°C (p<0.001). CONCLUSION POLARx could freeze the biological tissue more strongly than AFA-Pro.
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Affiliation(s)
- Takahiro Hayashi
- Cooperative Major in Advanced Biomedical Sciences, Joint Graduate School of Tokyo Women's Medical University and Waseda University, Shinjuku-ku, Japan
- Department of Cardiology, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Kohei Hamada
- Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Kiyotaka Iwasaki
- Cooperative Major in Advanced Biomedical Sciences, Joint Graduate School of Tokyo Women's Medical University and Waseda University, Shinjuku-ku, Japan
- Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
- Department of Modern Mechanical Engineering, School of Creative Science and Engnieering, Waseda University, Tokyo, Japan
| | - Jumpei Takada
- Department of Modern Mechanical Engineering, School of Creative Science and Engnieering, Waseda University, Tokyo, Japan
| | - Masato Murakami
- Department of Cardiology, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Shigeru Saito
- Department of Cardiology, Shonan Kamakura General Hospital, Kamakura, Japan
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Schiavone M, Gasperetti A, Martignani C, Montemerlo E, Ciconte G, Ziacchi M, Arosio R, Piazzi E, Spadotto A, Ruggiero D, Angeletti A, Pozzi M, Biffi M, Rovaris G, Forleo GB. Atrial fibrillation recurrences during the blanking period after catheter ablation with the laser balloon technique. J Cardiovasc Electrophysiol 2023; 34:2443-2451. [PMID: 37767727 DOI: 10.1111/jce.16087] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 09/10/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023]
Abstract
INTRODUCTION Regardless of the catheter ablation (CA) for atrial fibrillation (AF) strategy, the role of early recurrences during the blanking period (BP) is still unclear. Our aim was to evaluate atrial tachyarrhythmias (ATAs) recurrences during the BP after CA with the laser-balloon (LB) technique. METHODS Consecutive patients undergoing LBCA were enrolled. Primary outcome of the study was the overall crude ATA recurrence rate during the BP. ATA recurrences after the BP and in-hospital readmissions during the BP were deemed secondary outcomes. RESULTS Two hundred and twenty-four patients underwent CA with the LB. Median age was 63.0 (55.5-69.5) years and 74.1% were males. 28.6% were persistent AF patients, and 34.8% of patients were followed up with a loop recorder. 15.6% of patients experienced at least an ATA recurrence during the BP. Male sex, chronic heart failure, persistent AF, and recurrences during the BP were found to be associated with long-term ATA recurrences. Recurrences during the BP remained associated with the outcome of interest at multivariate analysis (hazard ratio [HR] = 12.393, 95% confidence interval [95% CI] = 3.699-41.865, p < .001). An association over time was found between early and late recurrences, with 73.7%, 45.5%, and 10.8% of patients presenting with recurrences at 1-, 2-, and 3-month follow-up being free from recurrences after the BP, respectively. 8.0% of patients were readmitted during the BP: 4.5% for AF electrical cardioversion, and 1.8% for CA of other atrial arrhythmias; no redo CA was performed. CONCLUSION After adjusting for confounders, ATA recurrences during the BP represent the most significant predictor of ATA recurrences after the BP, regardless of AF pattern.
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Affiliation(s)
- Marco Schiavone
- Cardiology Unit, Luigi Sacco University Hospital, Milan, Italy
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Department of Electrophysiology & Cardiac Pacing, Centro Cardiologico Monzino, IRCCS, Milan, Italy
| | - Alessio Gasperetti
- Cardiology Unit, Luigi Sacco University Hospital, Milan, Italy
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Cristian Martignani
- Cardiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | | | - Giuseppe Ciconte
- Arrhythmia and Electrophysiology Center, IRCCS Policlinico San Donato, San Donato Milanese, Milano, Italy
| | - Matteo Ziacchi
- Cardiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Roberto Arosio
- Cardiology Unit, Luigi Sacco University Hospital, Milan, Italy
| | - Elena Piazzi
- Cardiology Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Alberto Spadotto
- Cardiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Diego Ruggiero
- Cardiology Unit, Luigi Sacco University Hospital, Milan, Italy
| | - Andrea Angeletti
- Cardiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Mattia Pozzi
- Cardiology Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Mauro Biffi
- Cardiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Giovanni Rovaris
- Cardiology Unit, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
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Tan MC, Tan JL, Lee WJ, Srivathsan K, Sorajja D, El Masry H, Scott LR, Lee JZ. Adverse events in cryoballoon ablation for pulmonary vein isolation: Insight from the Food and Drug Administration Manufacturer and User Facility Device Experience. J Arrhythm 2023; 39:784-789. [PMID: 37799789 PMCID: PMC10549805 DOI: 10.1002/joa3.12898] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/13/2023] [Accepted: 07/03/2023] [Indexed: 10/07/2023] Open
Abstract
Background Real-world clinical data on the adverse events related to the use of cryoballoon catheter for pulmonary vein isolation remains limited. Objective To report and describe the adverse events related to the use of Artic Front cryoballoon catheters (Arctic Front, Arctic Front Advance, and Arctic Front Advance Pro) reported in the Food and Drug Administration's (FDA) Manufacturers and User Defined Experience (MAUDE) database. Methods We reviewed all the adverse events reported to the FDA MAUDE database over a 10.7-year study period from January 01, 2011 to September 31, 2021. All events were independently reviewed by two physicians. Results During the study period, a total of 320 procedural-related adverse events reported in the MAUDE database were identified. The most common adverse event was transient or persistent phrenic nerve palsy (PNP), accounting for 48% of all events. This was followed by cardiac perforation (15%), pulmonary vein stenosis (8%), transient ischemic attack or stroke (6%), vascular injury (4%), transient or persistent ST-elevation myocardial infarction (3%), hemoptysis (2%), pericarditis (2%), and esophageal ulcer or fistula (1%). There were six reported intra-procedural death events as a result of cardiac perforation. Conclusion The two most common procedural adverse events associated with cryoballoon ablation were PNP and cardiac perforation. All cases of procedural mortality were due to cardiac perforation.
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Affiliation(s)
- Min Choon Tan
- Department of Cardiovascular MedicineMayo Clinic ArizonaPhoenixArizonaUSA
- Department of Internal MedicineNew York Medical College at Saint Michael's Medical CenterNewarkNew JerseyUSA
| | - Jian Liang Tan
- Department of Cardiovascular MedicineHospital of the University of PennsylvaniaPhiladelphiaPennsylvaniaUSA
| | - Wei Jun Lee
- International Medical UniversityKuala LumpurMalaysia
| | | | - Dan Sorajja
- Department of Cardiovascular MedicineMayo Clinic ArizonaPhoenixArizonaUSA
| | - Hicham El Masry
- Department of Cardiovascular MedicineMayo Clinic ArizonaPhoenixArizonaUSA
| | - Luis R. Scott
- Department of Cardiovascular MedicineMayo Clinic ArizonaPhoenixArizonaUSA
| | - Justin Z. Lee
- Department of Cardiovascular MedicineCleveland ClinicClevelandOhioUSA
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5
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Almorad A, Del Monte A, Teumer Y, El Haddad M, Pannone L, Della Rocca DG, Audiat C, Cespón-Fernández M, Mouram S, Ramak R, Overeinder I, Bala G, Sorgente A, Ströker E, Sieira J, Brugada P, La Meir M, de Asmundis C, Chierchia GB. Safety of the Radiofrequency Balloon for Pulmonary Vein Isolation: A Focus on Lesion Metric Analysis of Posterior Electrodes. J Clin Med 2023; 12:6256. [PMID: 37834900 PMCID: PMC10573603 DOI: 10.3390/jcm12196256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/15/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Previous clinical studies on pulmonary vein isolation (PVI) with radiofrequency balloons (RFB) reported safe and effective procedures for a 20 s RF delivery via posterior electrodes. Recent recommendations from the manufacturer suggest reducing the application time to 15 s on the posterior wall (PW) when facing the esophagus region. Here, we retrospectively assess whether 15 s of RF delivery time on posterior electrodes is safe while still ensuring lesion metrics of sufficient quality. This retrospective study included 133 patients with paroxysmal and persistent atrial fibrillation who underwent PVI using an RFB (Heliostar, Biosense Webster, Inc., Irvine, CA, USA) at two European centers. The ablation protocol was set for an RF duration of 20 s/60 s for the posterior/anterior electrodes. A multielectrode temperature probe was systematically used. In the case of an esophageal temperature rise (ETR) above 42 °C (ETR+), an endoscopic evaluation was performed. All posterior electrode lesion metric dynamics (temperature (T) and impedance (Z)) were collected from the RFB generator and analyzed offline. In total, 2435 posterior electrode applications were analyzed. With an RF delivery of 19.8 (19.7-19.8) s, the median impedance drop was 18.4 (12.2-25.2) Ω, while the temperature rise was 11.1 (7.1-14.9) °C. Accordingly, impedance (84.6 (79.3-90.2) Ω) and temperature plateaus (38 (35.3-41.1) °C) were reached at 13.9 (10.6-16) s and 16.4 (12.6-18.5) s, respectively. Overall, 99.6% and 95.8% of electrodes reached 90% (16.6 Ω) and 95% (17.5 Ω) of their impedance drops within 15 s of RF delivery, while 97.2% and 92.8% achieved 90% (34.2 °C) and 95% (36.1 °C) of their temperature rise to reach the plateaus within 15 s of RF delivery. An ETR >42 °C occurred in 37 (30.1%) patients after 17.7 ± 2.3 s of RF delivery. In the ETR+ group, the impedance drop and temperature rise on the posterior electrodes were higher compared to patients where ETR was <42 °C. Two asymptomatic thermal esophageal injuries were observed. In conclusion, 15 s of RF delivery on the posterior electrodes provides a good balance between safety, with no esophageal temperature rise, and efficacy with high-profile lesion metrics.
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Affiliation(s)
- Alexandre Almorad
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Alvise Del Monte
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Yannick Teumer
- Department of Medicine II, Ulm University Medical Center, 89070 Ulm, Germany;
| | | | - Luigi Pannone
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Domenico Giovanni Della Rocca
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Charles Audiat
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - María Cespón-Fernández
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Sahar Mouram
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Robbert Ramak
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Ingrid Overeinder
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Gezim Bala
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Antonio Sorgente
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Erwin Ströker
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Juan Sieira
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Pedro Brugada
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Mark La Meir
- Cardiac Surgery Department, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium;
| | - Carlo de Asmundis
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
| | - Gian-Battista Chierchia
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, European Reference Networks Guard-Heart, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium; (A.D.M.); (L.P.); (D.G.D.R.); (C.A.); (M.C.-F.); (S.M.); (R.R.); (I.O.); (G.B.); (A.S.); (E.S.); (J.S.); (P.B.); (G.-B.C.)
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6
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Heeger CH, Popescu SȘ, Sohns C, Pott A, Metzner A, Inaba O, Straube F, Kuniss M, Aryana A, Miyazaki S, Cay S, Ehrlich JR, El-Battrawy I, Martinek M, Saguner AM, Tscholl V, Yalin K, Lyan E, Su W, Papiashvili G, Botros MSN, Gasperetti A, Proietti R, Wissner E, Scherr D, Kamioka M, Makimoto H, Urushida T, Aksu T, Chun JKR, Aytemir K, Jędrzejczyk-Patej E, Kuck KH, Dahme T, Steven D, Sommer P, Tilz RR. Impact of cryoballoon application abortion due to phrenic nerve injury on reconnection rates: a YETI subgroup analysis. Europace 2023; 25:374-381. [PMID: 36414239 PMCID: PMC9935004 DOI: 10.1093/europace/euac212] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/30/2022] [Indexed: 11/24/2022] Open
Abstract
AIMS Cryoballoon (CB)-based pulmonary vein isolation (PVI) is an effective treatment for atrial fibrillation (AF). The most frequent complication during CB-based PVI is right-sided phrenic nerve injury (PNI) which is leading to premature abortion of the freeze cycle. Here, we analysed reconnection rates after CB-based PVI and PNI in a large-scale population during repeat procedures. METHODS AND RESULTS In the YETI registry, a total of 17 356 patients underwent CB-based PVI in 33 centres, and 731 (4.2%) patients experienced PNI. A total of 111/731 (15.2%) patients received a repeat procedure for treatment of recurrent AF. In 94/111 (84.7%) patients data on repeat procedures were available. A total of 89/94 (94.7%) index pulmonary veins (PVs) have been isolated during the initial PVI. During repeat procedures, 22 (24.7%) of initially isolated index PVs showed reconnection. The use of a double stop technique did non influence the PV reconnection rate (P = 0.464). The time to PNI was 140.5 ± 45.1 s in patients with persistent PVI and 133.5 ± 53.8 s in patients with reconnection (P = 0.559). No differences were noted between the two populations in terms of CB temperature at the time of PNI (P = 0.362). The only parameter associated with isolation durability was CB temperature after 30 s of freezing. The PV reconnection did not influence the time to AF recurrence. CONCLUSION In patients with cryoballon application abortion due to PNI, a high rate of persistent PVI rate was found at repeat procedures. Our data may help to identify the optimal dosing protocol in CB-based PVI procedures. CLINICAL TRIAL REGISTRATION https://clinicaltrials.gov/ct2/show/NCT03645577?term=YETI&cntry=DE&draw=2&rank=1 ClinicalTrials.gov Identifier: NCT03645577.
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Affiliation(s)
- Christian-H Heeger
- Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
- Asklepios Klinik St. Georg, Hamburg, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
| | - Sorin Ștefan Popescu
- Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Christian Sohns
- Klinik für Rhythmology, Herz- und Diabeteszentrum NRW, Bad Oeynhausen, Germany
| | | | - Andreas Metzner
- Asklepios Klinik St. Georg, Hamburg, Germany
- Asklepios Klinik Harburg, Hamburg, Germany
- University Heart Center Hamburg, Germany
| | - Osamu Inaba
- Japanese Red Cross Saitama Hospital, Saitama, Japan
| | - Florian Straube
- München Klinik Bogenhausen und Schwabing, Klinik für Kardiologie und Internistische Intensivmedizin, München, Germany
- Faculty Munich University Clinic, Ludwig-Maximilians-University, Munich, Germany
| | | | - Arash Aryana
- Mercy General Hospital and Dignity Health Heart and Vascular Institute, Sacramento, CA, USA
| | | | - Serkan Cay
- Department of Cardiology, Division of Arrhythmia and Electrophysiology, University of Health Sciences, Ankara City Hospital, Ankara, Turkey
| | | | - Ibrahim El-Battrawy
- Department of Cardiology and Angiology, Bergmannsheil University Hospitals, Ruhr University of Bochum, Bochum, Germany
| | | | - Ardan M Saguner
- Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, Switzerland
| | - Verena Tscholl
- Charité—Universitaetsmedizin Berlin, Campus Mitte, Berlin, Germany
| | - Kivanc Yalin
- Cerrahpaşa Faculty of Medicine, İstanbul University-Cerrahpaşa, İstanbul, Turkey
| | | | | | | | | | - Alessio Gasperetti
- Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
- Department of Cardiology, Johns Hopkins University, Baltimore, USA
- Cardiology and Arrhythmology Clinic, Department of Biomedical Sciences and Public Health, University Hospital ‘Umberto I-Lancisi-Salesi’, Marche Polytechnic University, Ancona, IT, Italy
| | - Riccardo Proietti
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, United Kingdom
| | - Erik Wissner
- University of Illinois at Chicago Division of Cardiology, USA
| | | | - Masashi Kamioka
- Department of Cardiovascular Medicine, Fukushima Medical University, Japan
| | - Hisaki Makimoto
- Abteilung für Kardiologie, Universitätsklinik Düsseldorf, Germany
| | | | - Tolga Aksu
- Kocaeli Derince Training and Research, Turkey
| | - Julian K R Chun
- CCB/Med. Klinik III, Kardiologie, Markuskrankenhaus, Frankfurt am Main, Germany
| | - Kudret Aytemir
- Arrhythmia and Electrophysiology Unit, Department of Cardiology, Hacettepe University, Ankara, Turkey
| | - Ewa Jędrzejczyk-Patej
- Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Zabrze, Poland
| | - Karl-Heinz Kuck
- Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
- Asklepios Klinik St. Georg, Hamburg, Germany
- LANS Cardio, Hamburg, Germany
| | - Tillman Dahme
- Department of Cardiology, University of Ulm, Germany
| | - Daniel Steven
- Abteilung für Elektrophysiologie, Universität zu Köln, Köln, Germany
| | - Philipp Sommer
- Klinik für Rhythmology, Herz- und Diabeteszentrum NRW, Bad Oeynhausen, Germany
| | - Roland Richard Tilz
- Department of Rhythmology, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
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7
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Best Practice Guide for Cryoballoon Ablation in Atrial Fibrillation: The Compilation Experience of More than 1000 Procedures. J Cardiovasc Dev Dis 2023; 10:jcdd10020055. [PMID: 36826551 PMCID: PMC9967334 DOI: 10.3390/jcdd10020055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023] Open
Abstract
Nowadays, the cryoballoon (CB) constitutes an established alternative to radio frequency (RF) ablation for pulmonary vein isolation (PVI), which offers the possibility to isolate the PVs with a single application. Since the introduction of the second-generation CB, we prospectively collected our data to optimize the procedure on >1000 consecutive patients who underwent CB PVI performed in our center. It is expected that subsequent guidelines will suggest first-line PVI through CB in patients with paroxysmal AF with a class I indication. Indeed, in the long-term follow-up (36 months) of the EARLY-AF trial, CB had a lower incidence of persistent atrial fibrillation episodes compared to the anti-arrhythmic drugs group. We now review the current best practices in an effort to drive consistent outcomes and minimize complications. PV isolation through CB is the most studied single-shot technique for atrial fibrillation ablation, having shown the potential to alter the natural history of the arrhythmia. Several procedural tips and tricks can improve procedural flow and effectiveness. In the present article we provided not only technical details but measurable biophysical parameters that can reliably guide the operator into achieving the best outcome for his patients.
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8
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Kanagaratnam P, McCready J, Tayebjee M, Shepherd E, Sasikaran T, Todd D, Johnson N, Kyriacou A, Hayat S, Hobson NA, Mann I, Balasubramaniam R, Whinnett Z, Earley M, Petkar S, Veasey R, Kirubakaran S, Coyle C, Kim MY, Lim PB, O'Neill J, Davies DW, Peters NS, Babalis D, Linton N, Falaschetti E, Tanner M, Shah J, Poulter N. Ablation versus anti-arrhythmic therapy for reducing all hospital episodes from recurrent atrial fibrillation: a prospective, randomized, multi-centre, open label trial. Europace 2022; 25:863-872. [PMID: 36576323 PMCID: PMC10062288 DOI: 10.1093/europace/euac253] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 12/02/2022] [Indexed: 12/29/2022] Open
Abstract
AIMS There is rising healthcare utilization related to the increasing incidence and prevalence of atrial fibrillation (AF) worldwide. Simplifying therapy and reducing hospital episodes would be a valuable development. The efficacy of a streamlined AF ablation approach was compared to drug therapy and a conventional catheter ablation technique for symptom control in paroxysmal AF. METHODS AND RESULTS We recruited 321 patients with symptomatic paroxysmal AF to a prospective randomized, multi-centre, open label trial at 13 UK hospitals. Patients were randomized 1:1:1 to cryo-balloon ablation without electrical mapping with patients discharged same day [Ablation Versus Anti-arrhythmic Therapy for Reducing All Hospital Episodes from Recurrent (AVATAR) protocol]; optimization of drug therapy; or cryo-balloon ablation with confirmation of pulmonary vein isolation and overnight hospitalization. The primary endpoint was time to any hospital episode related to treatment for atrial arrhythmia. Secondary endpoints included complications of treatment and quality-of-life measures. The hazard ratio (HR) for a primary endpoint event occurring when comparing AVATAR protocol arm to drug therapy was 0.156 (95% CI, 0.097-0.250; P < 0.0001 by Cox regression). Twenty-three patients (21%) recorded an endpoint event in the AVATAR arm compared to 76 patients (74%) within the drug therapy arm. Comparing AVATAR and conventional ablation arms resulted in a non-significant HR of 1.173 (95% CI, 0.639-2.154; P = 0.61 by Cox regression) with 23 patients (21%) and 19 patients (18%), respectively, recording primary endpoint events (P = 0.61 by log-rank test). CONCLUSION The AVATAR protocol was superior to drug therapy for avoiding hospital episodes related to AF treatment, but conventional cryoablation was not superior to the AVATAR protocol. This could have wide-ranging implications on how demand for AF symptom control is met. TRIAL REGISTRATION Clinical Trials Registration: NCT02459574.
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Affiliation(s)
- Prapa Kanagaratnam
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK.,Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, 72 Du Cane Rd, London, W12 0HS, UK
| | - James McCready
- Department of Cardiology, Brighton & Sussex University Hospital, Brighton, UK
| | - Muzahir Tayebjee
- Department of Cardiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Ewen Shepherd
- Cardiology Department, Newcastle-upon-Tyne NHS Foundation Trust, Newcastle, UK
| | - Thiagarajah Sasikaran
- Imperial Clinical Trials Unit, School of Public Health, Imperial College London, London, UK
| | - Derick Todd
- Cardiology, Liverpool Heart and Chest Hospital, Liverpool, UK
| | - Nicholas Johnson
- Imperial Clinical Trials Unit, School of Public Health, Imperial College London, London, UK
| | - Andreas Kyriacou
- Department of Cardiology, Sheffield Teaching Hospitals NHS Trust, Sheffield, UK
| | - Sajad Hayat
- Cardiology, University Hospitals Coventry & Warwickshire, Coventry, UK
| | - Neil A Hobson
- Cardiology Department, Hull & East Yorkshire Hospitals NHS Trust, Hull, UK
| | - Ian Mann
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK
| | - Richard Balasubramaniam
- Cardiac Intervention Unit, Royal Bournemouth & Christchurch Hospitals NHS Trust, Bournemouth, UK
| | - Zachary Whinnett
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK
| | - Mark Earley
- Cardiology, Barts Health NHS Trust, London, UK
| | - Sanjiv Petkar
- Cardiology Department, Royal Wolverhampton NHS Trust, Wolverhampton, UK
| | - Rick Veasey
- Cardiology Department, East Sussex Healthcare NHS Trust, Eastbourne, UK
| | | | - Clare Coyle
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK
| | - Min-Young Kim
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK
| | - Phang Boon Lim
- Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, 72 Du Cane Rd, London, W12 0HS, UK
| | - James O'Neill
- Department of Cardiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - D Wyn Davies
- Cardiology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, 72 Du Cane Rd, London, W12 0HS, UK
| | - Nicholas S Peters
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK
| | - Daphne Babalis
- Imperial Clinical Trials Unit, School of Public Health, Imperial College London, London, UK
| | - Nicholas Linton
- National Heart and Lung Institute, Imperial College London, St Mary's Hospital, Praed Street, Paddington W2 1NY, UK
| | - Emanuela Falaschetti
- Imperial Clinical Trials Unit, School of Public Health, Imperial College London, London, UK
| | - Mark Tanner
- Cardiology, Western Sussex NHS Foundation Trust, Chichester, UK
| | - Jaymin Shah
- Cardiology, London North West University Healthcare NHS Trust, London, UK
| | - Neil Poulter
- Imperial Clinical Trials Unit, School of Public Health, Imperial College London, London, UK
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9
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Wei Y, Chen L, Cao J, Liu S, Ling T, Huang X, Zhou G, Lin C, Xie Y, Bao Y, Luo Q, Ye J, Zhang N, Jin Q, Wu L. Long-term outcomes of a time to isolation - based strategy for cryoballoon ablation compared to radiofrequency ablation in patients with symptomatic paroxysmal atrial fibrillation. Pacing Clin Electrophysiol 2022; 45:1015-1023. [PMID: 35767472 DOI: 10.1111/pace.14556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 05/03/2022] [Accepted: 05/13/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cryoballoon ablation (CBA) is one of the most commonly used technologies designed for pulmonary vein isolation (PVI) for paroxysmal atrial fibrillation (PAF), although the dosing of CBA remains controversial. We evaluated the long-term efficacy and safety of a novel individualized strategy of CBA compared to radiofrequency ablation (RFA) for patients with PAF. METHODS In this observational study, symptomatic patients with drug-refractory paroxysmal AF were prospectively consented and enrolled in four centers, being assigned either to the CBA or RFA arm for ablation. In the CBA group, we used a time to isolation (TTI) - based dosing protocol. The primary endpoint was the recurrence of atrial arrhythmia >30 s following a 90-day blanking period. The secondary endpoint was procedure-related complications and procedure parameters. RESULTS A total of 500 patients were recruited in either the CBA group (n = 247) or the RFA group (n = 253) between January 2017 and July 2018. After a median follow-up of 778 days, the atrial tachyarrhythmia-free survival was 71.7% in the CBA group and 67.0% in the RFA group. CBA and RFA displayed similar major or minor complication occurrence, while the former had a significantly shorter procedure duration (82.5 min vs. 141.1 min, p < .001) and left atrial dwell time (60.1 min vs. 109.9 min, p < .001) but longer fluoroscopy exposure (13.8 min vs. 8.1 min, p < .001). CONCLUSION Compared to RFA, our TTI-based CBA dosing protocol showed comparable efficacy and safety, with a significantly reduced procedure duration in patients with PAF.
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Affiliation(s)
- Yue Wei
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Lin Chen
- Department of Cardiology, Fujian Provincial Hospital, Fuzhou, People's Republic of China
| | - Jiang Cao
- Department of Cardiology, Changhai Hospital, Shanghai, People's Republic of China
| | - Shaowen Liu
- Department of Cardiology, Shanghai General Hospital, Shanghai, People's Republic of China
| | - Tianyou Ling
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xinmiao Huang
- Department of Cardiology, Changhai Hospital, Shanghai, People's Republic of China
| | - Genqing Zhou
- Department of Cardiology, Shanghai General Hospital, Shanghai, People's Republic of China
| | - Changjian Lin
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yun Xie
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yangyang Bao
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Qingzhi Luo
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Jiawen Ye
- Department of Cardiology, Shanghai No. 9 People's Hospital, Shanghai, People's Republic of China
| | - Ning Zhang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Qi Jin
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Liqun Wu
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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10
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Cryoballoon atrial fibrillation ablation experience in Japan. Curr Opin Cardiol 2022; 37:68-73. [PMID: 34857716 DOI: 10.1097/hco.0000000000000910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW In Japan, cryoballoon ablation has been widely accepted and more than 70 000 patients have undergone pulmonary vein isolation using this novel technology since the introduction. This review focused on the current status of cryoballoon ablation in Japan and clarified the characteristics as compared to Europe and the United States. RECENT FINDINGS The number of atrial fibrillation patients undergoing cryoballon ablation has rapidly increased over the last 6 years. Most of the Japanese physicians consider the indication of cryoballoon ablation based on the anatomy of the pulmonary veins and left atrium evaluated on preprocedural computed tomography, and often perform adjunctive radiofrequency ablation after the pulmonary vein isolation. The reported overall efficacy and safety were similar to that in Europe and the United States; however, there are some distinctive complications of the cryoballoon procedure in Japan, such as air embolisms, gastric hypomotility and coronary artery spasms. SUMMARY Currently, the cryoballoon pulmonary vein isolation is widely accepted in Japan owing to the low incidence of lethal complications, shorter procedure time and acceptable single procedure atrial fibrillation freedom.
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11
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Heeger CH, Sohns C, Pott A, Metzner A, Inaba O, Straube F, Kuniss M, Aryana A, Miyazaki S, Cay S, Ehrlich JR, El-Battrawy I, Martinek M, Saguner AM, Tscholl V, Yalin K, Lyan E, Su W, Papiashvili G, Botros MSN, Gasperetti A, Proietti R, Wissner E, Scherr D, Kamioka M, Makimoto H, Urushida T, Aksu T, Chun JKR, Aytemir K, Jędrzejczyk-Patej E, Kuck KH, Dahme T, Steven D, Sommer P, Richard Tilz R. Phrenic Nerve Injury During Cryoballoon-Based Pulmonary Vein Isolation: Results of the Worldwide YETI Registry. Circ Arrhythm Electrophysiol 2021; 15:e010516. [PMID: 34962134 PMCID: PMC8772436 DOI: 10.1161/circep.121.010516] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Supplemental Digital Content is available in the text. Background: Cryoballoon-based pulmonary vein isolation (PVI) has emerged as an effective treatment for atrial fibrillation. The most frequent complication during cryoballoon-based PVI is phrenic nerve injury (PNI). However, data on PNI are scarce. Methods: The YETI registry is a retrospective, multicenter, and multinational registry evaluating the incidence, characteristics, prognostic factors for PNI recovery and follow-up data of patients with PNI during cryoballoon-based PVI. Experienced electrophysiological centers were invited to participate. All patients with PNI during CB2 or third (CB3) and fourth-generation cryoballoon (CB4)-based PVI were eligible. Results: A total of 17 356 patients underwent cryoballoon-based PVI in 33 centers from 10 countries. A total of 731 (4.2%) patients experienced PNI. The mean time to PNI was 127.7±50.4 seconds, and the mean temperature at the time of PNI was −49±8°C. At the end of the procedure, PNI recovered in 394/731 patients (53.9%). Recovery of PNI at 12 months of follow-up was found in 97.0% of patients (682/703, with 28 patients lost to follow-up). A total of 16/703 (2.3%) reported symptomatic PNI. Only 0.06% of the overall population showed symptomatic and permanent PNI. Prognostic factors improving PNI recovery are immediate stop at PNI by double-stop technique and utilization of a bonus-freeze protocol. Age, cryoballoon temperature at PNI, and compound motor action potential amplitude loss >30% were identified as factors decreasing PNI recovery. Based on these parameters, a score was calculated. The YETI score has a numerical value that will directly represent the probability of a specific patient of recovering from PNI within 12 months. Conclusions: The incidence of PNI during cryoballoon-based PVI was 4.2%. Overall 97% of PNI recovered within 12 months. Symptomatic and permanent PNI is exceedingly rare in patients after cryoballoon-based PVI. The YETI score estimates the prognosis after iatrogenic cryoballoon-derived PNI. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03645577. Graphic Abstract: A graphic abstract is available for this article.
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Affiliation(s)
- Christian-H Heeger
- University Heart Center Lübeck, Medical Clinic II, Department of Cardiology, Angiology and Intensive Care Medicine, Germany (C.-H.H., A.G., K.-H.K., R.R.T.).,Asklepios Klinik St. Georg, Hamburg, Germany (C.-H.H., A.M., K.-H.K.).,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Germany (C.-H.H., R.R.T.)
| | - Christian Sohns
- Herz- und Diabeteszentrum NRW, Bad Oeynhausen, Germany (C.S., P.S.)
| | - Alexander Pott
- Department of Cardiology, University of Ulm, Germany (A.P., T.D.)
| | - Andreas Metzner
- Asklepios Klinik St. Georg, Hamburg, Germany (C.-H.H., A.M., K.-H.K.).,Asklepios Klinik Harburg, Hamburg, Germany (A.M.).,University Heart Center Hamburg, Germany (A.M.)
| | - Osamu Inaba
- Japanese Red Cross Saitama Hospital, Saitama, Japan (O.I.)
| | - Florian Straube
- München Klinik Bogenhausen und Schwabing, Klinik für Kardiologie und Internistische Intensivmedizin, München, Germany (F.S.).,Ludwig-Maximilians-University, Faculty Munich University Clinic, Germany (F.S.)
| | | | - Arash Aryana
- Mercy General Hospital and Dignity Health Heart and Vascular Institute, Sacramento, CA (A.A.)
| | | | - Serkan Cay
- Department of Cardiology, Division of Arrhythmia and Electrophysiology, University of Health Sciences, Ankara City Hospital, Turkey (S.C.)
| | | | | | | | - Ardan M Saguner
- Department of Cardiology, University Heart Center Zurich, University Hospital Zurich, Switzerland (A.M.S.)
| | - Verena Tscholl
- Charité Campus Benjamin Franklin, Berlin, Germany (V.T.)
| | - Kivanc Yalin
- #x0130;stanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, İstanbul, Turkey (K.Y.)
| | | | - Wilber Su
- Division of Cardiology, University of Illinois at Chicago (E.W.)
| | | | | | - Alessio Gasperetti
- University Heart Center Lübeck, Medical Clinic II, Department of Cardiology, Angiology and Intensive Care Medicine, Germany (C.-H.H., A.G., K.-H.K., R.R.T.).,Department of Cardiology, Johns Hopkins University, Baltimore (A.G.).,Cardiology and Arrhythmology Clinic, Department of Biomedical Sciences and Public Health, University Hospital "Umberto I-Lancisi-Salesi", Marche Polytechnic University, Ancona, IT, Italy (A.G.)
| | - Riccardo Proietti
- Department of Cardiac, Thoracic and Vascular Sciences and Public Health, University of Padova, Italy (R.P.)
| | | | | | - Masashi Kamioka
- Department of Cardiovascular Medicine, Fukushima Medical University, Japan (M.K.)
| | - Hisaki Makimoto
- Universitätsklinik Düsseldorf, Abteilung für Kardiologie, Germany (H.M.)
| | | | - Tolga Aksu
- Kocaeli Derince Training and Research, Turkey (T.A.)
| | - Julian K R Chun
- CCB / Med. Klinik III, Kardiologie, Markuskrankenhaus, Frankfurt am Main, Germany (J.K.R.C.)
| | - Kudret Aytemir
- Arrhythmia and Electrophysiology Unit, Department of Cardiology, Hacettepe University, Ankara, Turkey (K.A.)
| | - Ewa Jędrzejczyk-Patej
- Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Zabrze, Poland (E.J.-P.)
| | - Karl-Heinz Kuck
- University Heart Center Lübeck, Medical Clinic II, Department of Cardiology, Angiology and Intensive Care Medicine, Germany (C.-H.H., A.G., K.-H.K., R.R.T.).,Asklepios Klinik St. Georg, Hamburg, Germany (C.-H.H., A.M., K.-H.K.).,LANS Cardio, Hamburg, Germany (K.-H.K.)
| | - Tillman Dahme
- Department of Cardiology, University of Ulm, Germany (A.P., T.D.)
| | - Daniel Steven
- Universität zu Köln, Abteilung für Elektrophysiologie, Köln, Germany (D.S.)
| | - Philipp Sommer
- Herz- und Diabeteszentrum NRW, Bad Oeynhausen, Germany (C.S., P.S.)
| | - Roland Richard Tilz
- University Heart Center Lübeck, Medical Clinic II, Department of Cardiology, Angiology and Intensive Care Medicine, Germany (C.-H.H., A.G., K.-H.K., R.R.T.).,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Germany (C.-H.H., R.R.T.)
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12
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Vrachatis DA, Papathanasiou KA, Kossyvakis C, Kazantzis D, Giotaki SG, Deftereos G, Sanz-Sánchez J, Raisakis K, Kaoukis A, Avramides D, Lambadiari V, Siasos G, Giannopoulos G, Deftereos S. Early arrhythmia recurrence after cryoballoon ablation in atrial fibrillation: a systematic review and meta-analysis. J Cardiovasc Electrophysiol 2021; 33:527-539. [PMID: 34951496 DOI: 10.1111/jce.15337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/10/2021] [Accepted: 11/18/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Early arrhythmia recurrence within the three-month blanking period is a common event that historically has been attributed to reversible phenomena. While its' mechanistic links remain obscure, accumulating evidence support the argument of shortening the blanking period. We aimed to elucidate the association between early and late arrhythmia recurrence after atrial fibrillation cryoablation. METHODS The MEDLINE database, ClinicalTrials.gov, medRxiv and Cochrane Library were searched for studies evaluating early and late arrhythmia recurrence rates in patients undergoing cryoablation for AF. Data were pooled by meta-analysis using a random-effects model. The primary endpoint was late arrhythmia recurrence. RESULTS Early arrhythmia recurrence was found predictive of decreased arrhythmia-free survival after evaluating 3975 patients with paroxysmal or persistent atrial fibrillation who underwent cryoablation (OR: 5.31; 95% CI: 3.75-7.51). This pattern remained unchanged after sub-analyzing atrial fibrillation type (paroxysmal; OR: 7.16; 95% CI: 4.40-11.65 and persistent; OR: 7.63; 95% CI: 3.62-16.07) as well as cryoablation catheter generation (first generation; OR: 5.15, 95% CI: 2.39-11.11 and advanced generation; OR: 5.83, 95% CI: 3.68-9.23). Studies permitting anti-arrhythmic drug utilization during blanking period or examining early recurrence as a secondary outcome were found to be a significant source of statistical heterogeneity. CONCLUSION Our findings suggest that early arrhythmia recurrence is predictive of late outcomes after cryoablation for atrial fibrillation. Identifying which patients deserve earlier re-intervention is an open research avenue. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | | | | | - Dimitrios Kazantzis
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Sotiria G Giotaki
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Gerasimos Deftereos
- Department of Cardiology, "G. Gennimatas" General Hospital of Athens, Greece
| | - Jorge Sanz-Sánchez
- Division of Cardiology, Hospital Universitario y Politécnico La Fe, Valencia, Spain.,Centro de Investigacion Biomédica en Red (CIBERCV), Madrid, Spain
| | | | - Andreas Kaoukis
- Department of Cardiology, "G. Gennimatas" General Hospital of Athens, Greece
| | - Dimitrios Avramides
- Department of Cardiology, "G. Gennimatas" General Hospital of Athens, Greece
| | - Vaia Lambadiari
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Gerasimos Siasos
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Spyridon Deftereos
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
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Kaneshiro T, Takeishi Y. Esophageal thermal injury in catheter ablation of atrial fibrillation. Fukushima J Med Sci 2021; 67:95-101. [PMID: 34803083 PMCID: PMC8784191 DOI: 10.5387/fms.2021-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Pulmonary vein isolation is an established method for the catheter ablation of atrial fibrillation. Esophageal thermal injuries, such as esophageal erosion, ulceration and periesophageal nerve injury leading to gastric hypomotility, are important complications associated with pulmonary vein isolation. In this review article, we describe the mechanisms, characteristics and the predictors of esophageal thermal injury associated with pulmonary vein isolation.
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Affiliation(s)
- Takashi Kaneshiro
- Department of Cardiovascular Medicine/Arrhythmia and Cardiac Pacing, Fukushima Medical University
| | - Yasuchika Takeishi
- Department of Cardiovascular Medicine/Arrhythmia and Cardiac Pacing, Fukushima Medical University
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14
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Heeger CH, Popescu SS, Saraei R, Kirstein B, Hatahet S, Samara O, Traub A, Fehe M, D'Ambrosio G, Keelani A, Schlüter M, Eitel C, Vogler J, Kuck KH, Tilz RR. Individualized or fixed approach to pulmonary vein isolation utilizing the fourth-generation cryoballoon in patients with paroxysmal atrial fibrillation: the randomized INDI-FREEZE trial. Europace 2021; 24:921-927. [PMID: 34907431 PMCID: PMC9282912 DOI: 10.1093/europace/euab305] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
AIMS Cryoballoon (CB) based pulmonary vein isolation (PVI) is a widely used technique for treatment of atrial fibrillation (AF); however the ideal energy dosing has not yet been standardized. This was a single-centre randomized clinical trial aiming at assessing the safety, acute efficacy, and clinical outcome of an individualized vs. a fixed CB ablation protocol using the fourth-generation CB (CB4) guided by pulmonary vein (PV) potential recordings and CB temperature. METHODS AND RESULTS Patients were randomized in a 1:1 fashion to two different dosing protocols: INDI-FREEZE group (individualized protocol): freeze-cycle duration of time to effect plus 90 s or interruption of the freeze-cycle and repositioning CB if a CB temperature of -30°C was not within 40 s. Control group (fixed protocol): freeze-cycle duration of 180 s. No-bonus freeze-cycle was applied in either patient group. The primary endpoint was freedom from atrial tachyarrhythmia at 12 months. Secondary end points included procedural parameters and complications. A total of 100 patients with paroxysmal AF were prospectively enrolled. No difference was seen in the primary endpoint [INDI-FREEZE group: 38/47 (81%) vs. control group: 40/47, (85%), P = 0.583]. The total freezing time was significantly shorter in the INDI-FREEZE group (157 ± 56 s vs. 212 ± 83 s, P < 0.001), while procedure duration (57.9 ± 17.9 min vs. 63.2 ± 20.2 min, P = 0.172) was similar. No differences were seen in the minimum CB and oesophageal temperatures as well as in periprocedural complications. CONCLUSION Compared to the fixed protocol, the individualized approach provides a similar safety profile and clinical outcome, while reducing the total freezing time.
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Affiliation(s)
- Christian-Hendrik Heeger
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
| | - Sorin Stefan Popescu
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany.,Carol Davila, University of Medicine and Pharmacy, Bucharest, Romania
| | - Roza Saraei
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Bettina Kirstein
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Sascha Hatahet
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Omar Samara
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Anna Traub
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Marcel Fehe
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Gabriele D'Ambrosio
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Ahmad Keelani
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | | | - Charlotte Eitel
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Julia Vogler
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany
| | - Karl-Heinz Kuck
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany.,LANS Cardio, Stephansplatz 5, 20354 Hamburg, Germany
| | - Roland Richard Tilz
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, Ratzeburger Allee 160, D-23538 Lübeck, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
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15
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Key characteristics for effective acute pulmonary vein isolation when using a novel cryoballoon technology: insights from the CHARISMA registry. J Interv Card Electrophysiol 2021; 64:641-648. [PMID: 34853986 DOI: 10.1007/s10840-021-01063-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/02/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE A new cryoballoon (CB) technology (POLARx™; Boston Scientific) for pulmonary vein (PV) isolation in patients with atrial fibrillation (AF) has recently been introduced. The aim of this study was to evaluate procedural and biophysical parameters resulting in acute PV isolation when using this new CB. METHODS We assessed the first 69 consecutive patients indicated for AF ablation who underwent PV isolation by means of a novel CB system. Procedural metrics were prospectively recorded. RESULTS A total of 274 PVs were targeted in 69 patients. PV isolation was achieved in all patients by means of cryoablation alone. The median time to isolation (TTI) was 44 [31-68] s (median temperature at TTI = - 49 [- 53 to - 41] °C). The median duration of CB ablation was 180 [180 to 240] s. The median nadir temperature was - 56.0 [- 61 to - 52] °C, and the median thaw time to 0 °C was 18 [15-21] s. The median grade of PV occlusion was 4 [3 to 4]. On the basis of ROC analysis, we defined the following cut-off values for acute PV isolation: - 56 °C for nadir temperature (sensitivity = 73.3%, specificity = 64.6%, AUC = 0.716; positive predictive value = 88.1%), 30 s for TTT (60.2%, 53.3%, 0.578; 79.7%), thaw time > 17 s (65.3%, 70.0%, 0.709; 86.9%), and grade of PV occlusion = 4 (79.4%, 66.7%, 0.738; 88.5%). No major procedure-related adverse events were observed at 30-day post-procedure. CONCLUSIONS The new POLARx™ CB appears to be effective and safe. A nadir temperature of - 56 °C, a thaw time to 0 °C ≥ 17 s, and complete PV occlusion were the best predictors of acute PV isolation. CLINICAL TRIAL REGISTRATION Catheter Ablation of Arrhythmias with a High-Density Mapping System in Real-World Practice (CHARISMA). URL: http://clinicaltrials.gov/Identifier : NCT03793998. Registration date: January 4, 2019.
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16
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Jiang C, Zhao D, Tang K, Wang Y, Li X, Jia P, Xu Y, Han B. Effectiveness and Safety of Cryoablation in Patients With Atrial Fibrillation Episodes of <24 h Duration: A Propensity-Matched Analysis. Front Cardiovasc Med 2021; 8:724378. [PMID: 34765651 PMCID: PMC8576169 DOI: 10.3389/fcvm.2021.724378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 09/24/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Paroxysmal atrial fibrillation (AF) is closely related to pathophysiologic processes and clinical outcomes. However, it is uncertain whether cryoablation of pulmonary veins isolation is effective and safe for patients with symptomatic and drug refractory AF episodes of <24-h duration. Methods: The patients were designed into Group A (253 patients with paroxysmal AF episodes of <24-h duration) and Group B (253 patients with paroxysmal AF lasting for 24 h or longer) on a 1:1 basis by identical propensity scores. Mortality, stroke/transient ischemic attack (TIA), and complications relevant to the cryoablation procedure were compared, and recurrence of atrial tachyarrhythmia was analyzed for clinical independent predictors. Results: The rate of atrial tachyarrhythmia recurrence was 21.74% in Group A and 30.04% in Group B, respectively (P = 0.042). At 12-month follow-up from the procedure, lower incidences of stroke/TIA endpoint of the patients were observed in Group A compared with Group B by Kaplan–Meier analysis [HR 0.34 (0.13–0.87), P = 0.025]. No significant differences in mortality and complications relevant to the cryoablation procedure were observed between Group A and Group B. Moreover, adjusted multivariable Cox regression analysis showed that <24-h paroxysmal AF type (HR 0.644, 95% CI: 0.455–0.913, P = 0.014) and left atrium diameter (LAD) (>40 mm) (HR 1.696, 95% CI: 1.046–2.750, P = 0.032) were independently associated with the incidence of recurrence of atrial tachyarrhythmia in the study. Conclusion: Our findings indicated that <24-h paroxysmal AF type was obviously associated with an increased success rate of cryoablation and reduced incidence of stroke/TIA during the follow-up period. Therefore, there is superior effectiveness and similar safety in patients with AF episodes of <24-h duration compared with patients with longer paroxysmal AF duration.
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Affiliation(s)
- Chunying Jiang
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China.,Department of Cardiology, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Central Hospital, Xuzhou, China
| | - Dongdong Zhao
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China
| | - Kai Tang
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China
| | - Yiqian Wang
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China
| | - Xiang Li
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China
| | - Peng Jia
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China
| | - Yawei Xu
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University, Shanghai Tenth People's Hospital, Shanghai, China
| | - Bing Han
- Department of Cardiology, The Xuzhou School of Clinical Medicine of Nanjing Medical University, Xuzhou Central Hospital, Xuzhou, China
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17
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Nakano T, Suenari K, Okada A, Hyodo Y, Tomomori S, Higaki T, Oi K, Dai K, Kawase T, Nakama Y, Nishioka K, Otsuka M, Masaoka Y, Shiode N, Nakano Y. New Minimally Invasive and Tailor-Made Strategy for Cryoballoon Ablation in Patients With Paroxysmal Atrial Fibrillation. Heart Lung Circ 2021; 31:530-536. [PMID: 34753660 DOI: 10.1016/j.hlc.2021.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 09/14/2021] [Accepted: 10/10/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The optimal dosage for cryoballoon ablation (CBA) of atrial fibrillation (AF) is still unknown. OBJECTIVE This study aimed to evaluate the clinical implications of a reduction in the freezing duration to <180 seconds during CBA guided by the time to the target temperature. METHODS This study enrolled 325 consecutive paroxysmal AF patients who underwent CBA. It was a retrospective observational study in a single centre. It compared 164 patients who underwent a tailor-made CBA procedure (group T) with 161 who had a standard CBA procedure (group S). In group T, the freezing duration was reduced to 150 seconds when the temperature reached ≤ -40 °C within 40 seconds. Furthermore, it was reduced to 120 seconds when it reached ≤ -50 °C within 60 seconds. In the other patients, the freezing duration was 180 seconds, except for excessive freezing of ≤ -60 °C and/or emergent situations while monitoring the oesophageal temperature, and for phrenic nerve injury, as in group S. RESULTS In group T, 89 patients (83%) underwent CBA with a reduction in the freezing duration. The total freezing time for each pulmonary vein was significantly shorter in group T than group S, and the total procedure time in group T decreased by an average of 4 minutes compared with group S. The rate of requiring additional radio frequency ablation following the CBA was significantly lower in group T than group S. The AF-free survival rate during the follow-up period (median, 366 days) was similar between the two groups. CONCLUSION The safety and efficacy of the new CBA strategy were non-inferior to the standard procedure.
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Affiliation(s)
- Takayuki Nakano
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan; Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Kazuyoshi Suenari
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan.
| | - Akira Okada
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Yohei Hyodo
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Shunsuke Tomomori
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Tadanao Higaki
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Kuniomi Oi
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Kazuoki Dai
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Tomoharu Kawase
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Yasuharu Nakama
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Kenji Nishioka
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Masaya Otsuka
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Yoshiko Masaoka
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Nobuo Shiode
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Yukiko Nakano
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
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18
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Jiang C, Zhang J, Ren Z, Guo R, Li H, Li S, Zhu M, Jia P, Tang K, Zhao D, Xu Y. Recurrent atrial fibrillation after initial cryoballoon ablation: New perspectives for intensive ablation in right superior pulmonary vein ostium for atrial fibrillation. Cryobiology 2021; 103:49-56. [PMID: 34648777 DOI: 10.1016/j.cryobiol.2021.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 09/26/2021] [Accepted: 09/27/2021] [Indexed: 01/10/2023]
Abstract
A significant proportion of patients with recurrent atrial fibrillation (AF) require repeat radiofrequency (RF) ablation after cryoballoon (CB) ablation. However, little is known about the pulmonary vein (PV) potential reconnection to left atrium and localization of gaps in the initial lesion sets following cryoablation in patients with recurrent AF. The data of 29 consecutive patients with repeat RF ablation for recurrent AF were analyzed. During the second ablation procedures, PV foci of AF were explored in 116 PVs by the CARTO system. All patients had complete PV isolation from initial cryoablation procedure. The fluoroscopy duration, mean cryoablation time and mean cryoablation frequency were lowest for the right superior pulmonary vein (RSPV) (58.69 ± 9.18 s, 185.10 ± 49.25 s and 1.07 ± 0.26; p = 0.024, p = 0.042 and p = 0.032). A significantly higher incidence of conduction gaps per patient was found for the RSPVs compared to the other PVs (p < 0.05 or p < 0.01). For RSPVs, it seemed that gaps were predominantly located at the anterior segment (22 gaps) and inferior segment (22 gaps). RSPV reconnection was independently related to a lower risk of major adverse events after the second ablation during follow up in the study patients (HR 0.275, 95%CI 0.078-0.967, p = 0.044). AF recurrence in patients after cryoablation is significantly associated with conduction gaps in the anterior and inferior segments of RSPVs. Various ablation strategies of close touch of CB on anterior and inferior segments of RSPV ostium, more freezing time and frequency for RSPV may help achieving durable PV isolation during follow up.
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Affiliation(s)
- Chunying Jiang
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China; Department of Cardiology, The Xuzhou School of Clinical Medicine of Nanjing Medical University; Xuzhou Central Hospital, 199 Liberation South Road, Xuzhou City, China
| | - Jun Zhang
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Zhongyuan Ren
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Rong Guo
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Hailing Li
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Shuang Li
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Mengyun Zhu
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Peng Jia
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Kai Tang
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China
| | - Dongdong Zhao
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China.
| | - Yawei Xu
- Department of Cardiology, Shanghai Tenth Clinical Medical School of Nanjing Medical University; Shanghai Tenth People's Hospital, 301 Yanchang Road, Shanghai City, China.
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Makino Y, Mizutani Y, Yamashita D, Yonekawa J, Satake A, Kurobe M, Hiramatsu T, Ichimiya H, Uchida Y, Watanabe J, Kanashiro M, Ichimiya S, Yanagisawa S, Inden Y, Murohara T. Cryoballoon ablation for atrial fibrillation without the use of a contrast medium: a combination of the intracardiac echocardiography and pressure wave monitoring guided approach. Heart Vessels 2021; 37:765-774. [PMID: 34636968 DOI: 10.1007/s00380-021-01963-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 10/08/2021] [Indexed: 12/01/2022]
Abstract
In cryoballoon ablation (CBA), a contrast medium is commonly used to confirm balloon occlusion of the pulmonary veins (PVs). However, a contrast medium cannot always be used in patients with renal dysfunction and allergy. The present study aimed to assess the efficacy and safety of CBA without the use of a contrast medium. We retrospectively examined consecutive patients with paroxysmal atrial fibrillation (PAF) who underwent first-time CBA. We compared the procedural results and outcomes in patients for whom a contrast medium was used (contrast group) and those from whom a contrast medium was not used (non-contrast group). In the non-contrast group, we used saline injection on the intracardiac echocardiography and pressure wave monitoring for PV occlusion. Fifty patients (200 PVs) and 22 patients (88 PVs) underwent CBA with and without a contrast medium, respectively. The success rate of PV isolation with CBA alone was 93% and 90% in the non-contrast and contrast groups, respectively (p = 0.40). The fluoroscopy time and nadir temperature were significantly lower in the non-contrast group as compared to that in the contrast group. The recurrence rate 1 year after ablation did not differ between the two groups (18% vs. 18%, p > 0.99). Furthermore, the number of reconnected PVs in patients with recurrence was significantly lower in the non-contrast group than in the contrast group (6% vs. 36%, p = 0.017). In conclusion, CBA using the intracardiac echocardiography and pressure monitoring approach without the use of a contrast medium was safe and efficient.
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Affiliation(s)
- Yuichiro Makino
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan.
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
| | - Yoshiaki Mizutani
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Daiki Yamashita
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Jun Yonekawa
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Akinori Satake
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Masanari Kurobe
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Takatsugu Hiramatsu
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Hitoshi Ichimiya
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Yasuhiro Uchida
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Junji Watanabe
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Masaaki Kanashiro
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Satoshi Ichimiya
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Satoshi Yanagisawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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20
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Left Atrial Fibrosis after Single Shot Guided Pulmonary Vein Isolation. J Clin Med 2021; 10:jcm10194478. [PMID: 34640495 PMCID: PMC8509823 DOI: 10.3390/jcm10194478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/21/2021] [Accepted: 09/22/2021] [Indexed: 11/16/2022] Open
Abstract
Cryoballoon (CB)-based pulmonary vein isolation (PVI) is an effective treatment modality for patients with atrial fibrillation (AF) with encouraging acute and long-term outcome data. However, the size of collaterally created lesion sets adjacent to the pulmonary veins (PVs) remains unclear, especially when CB ablation is performed with individualized time-to-isolation (TTI) protocols. This study seeks to investigate the extension of lesions at the posterior wall and the roof of the left atrium (LA). Thirty patients with paroxysmal or persistent AF underwent ablation with a fourth-generation CB. The individual freeze-cycle duration was set at TTI + 120 s. A total of 120 PVs were identified, and all were successfully isolated. A three-dimensional electroanatomical high-density (HD) mapping of the LA was performed in every patient before and after PVI. The surface areas of the posterior wall and LA roof were measured and compared with lesion extension after PVI. After CB ablation, 65.6 ± 16.9% of the posterior wall and 75.4 ± 18.4% of the LA roof remained unablated. In addition, non-antral lesion formation was observed in every patient in at least one PV. After CB ablation, anterior antral parts of the superior PVs showed the greatest unablated areas compared with the other antral areas. HD re-mapping after CB-based PVI demonstrated that major regions of the posterior wall and roof remained electrically normal and unaffected. Unablated antral areas were localized predominantly in the anterior segments of the superior PVs and may be partly responsible for AF recurrence.
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21
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Mizutani Y, Yanagisawa S, Kanashiro M, Yamashita D, Yonekawa J, Makino Y, Hiramatsu T, Ichimiya H, Uchida Y, Watanabe J, Ichimiya S, Inden Y, Murohara T. Earliest pulmonary vein potential-guided cryoballoon ablation is associated with better clinical outcomes than conventional cryoballoon ablation: A result from two randomized clinical studies. J Cardiovasc Electrophysiol 2021; 32:2933-2942. [PMID: 34535938 DOI: 10.1111/jce.15246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/20/2021] [Accepted: 09/06/2021] [Indexed: 12/20/2022]
Abstract
INTRODUCTION With regard to short-term outcome in atrial fibrillation (AF), the benefit of cryoballoon ablation (CBA) by pressing a balloon against the earliest pulmonary vein (PV) potential site during PV isolation (earliest potential [EP]-guided CBA) has been previously demonstrated. The present study aimed to evaluate the long-term outcome of the EP-guided CBA. METHODS AND RESULTS This study included 136 patients from two randomized studies, who underwent CBA for paroxysmal AF for the first time. Patients were randomly assigned to the EP-guided and conventional CBA groups in each study. In the EP-guided CBA group, we pressed a balloon against the EP site when the time-to-isolation (TTI) after cryoapplication exceeded 60 and 45 s in the first and second studies, respectively. We compared the clinical outcomes for 1 year after the procedure between the EP-guided CBA group (68 patients) and the conventional CBA group (68 patients). The primary endpoint was the recurrence of atrial arrhythmia after ablation. No significant differences in baseline characteristics were observed between the two groups. Compared with the conventional CBA group, the EP-guided CBA group had a significantly higher success rate at TTI ≤ 90 s (98.5% vs. 90.0%, p < .001); lower touch-up rate and total cryoapplication; and shorter procedure time, and fluoroscopy time. The recurrence at 1 year after ablation was significantly lower in the EP-guided CBA group than in the conventional CBA group (6.0% vs. 19.4%; p = .019). CONCLUSIONS The EP-guided CBA approach can facilitate the ablation procedure and achieve low recurrence at 1 year after ablation.
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Affiliation(s)
- Yoshiaki Mizutani
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan.,Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Satoshi Yanagisawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Masaaki Kanashiro
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Daiki Yamashita
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Jun Yonekawa
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Yuichiro Makino
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Takatsugu Hiramatsu
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Hitoshi Ichimiya
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Yasuhiro Uchida
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Junji Watanabe
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Satoshi Ichimiya
- Department of Cardiology, Yokkaichi Municipal Hospital, Yokkaichi, Mie, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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22
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Kühne M, Knecht S, Spies F, Aeschbacher S, Haaf P, Zellweger M, Schaer B, Osswald S, Sticherling C. Cryoballoon Ablation of Atrial Fibrillation Without Demonstration of Pulmonary Vein Occlusion-The Simplify Cryo Study. Front Cardiovasc Med 2021; 8:664538. [PMID: 34124199 PMCID: PMC8187607 DOI: 10.3389/fcvm.2021.664538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 05/04/2021] [Indexed: 11/20/2022] Open
Abstract
Background: The demonstration of pulmonary vein (PV) occlusion is routinely performed and considered a prerequisite for successful cryoballoon (CB) ablation of atrial fibrillation (AF). The purpose of this study was to assess the feasibility and impact on procedural parameters and outcome of a standardized procedural protocol without demonstrating PV occlusion. Methods and Results: Consecutive patients undergoing CB pulmonary vein isolation (PVI) were studied. After cMRI assessment, patients treated by PVI using a novel no-contrast (NC) protocol without routine contrast injections to demonstrate PV occlusion (NC group) were compared to patients undergoing PVI with contrast injections to demonstrate PV occlusion (standard group). One hundred patients with paroxysmal or persistent AF (age 61 ± 10 years, ejection fraction 59 ± 11%, left atrial volume index 37.2 ± 2.0 mL/m2) were studied. The NC protocol was feasible in 72 of 75 patients (96%). Total procedure time and fluoroscopy time were 64.0 ± 14.1 min and 11.0 ± 4.6 min in the NC group and 92.0 ± 25.3 min and 18.0 ± 6.0 min in the standard group, respectively (all p < 0.001). Dose area product was 368 ± 362 cGy*cm2 in the NC group compared to 1928 ± 1541 cGy*cm2 in the standard group (p < 0.001). Forty-five of 75 patients (60%) in the NC group and 16 of 25 patients (64%) in the standard group remained in stable sinus rhythm after a single PVI and a 1-year follow-up (p = 0.815). Conclusions: Performing CB ablation without using contrast injections to demonstrate PV occlusion was feasible, resulted in reduced radiation exposure, and increased the efficiency of the procedure.
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Affiliation(s)
- Michael Kühne
- Department of Cardiology, University Hospital of Basel, Basel, Switzerland
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23
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Dulai R, Uy CP, Kassir Y, Maravilla VA, Patel N, Furniss S, Sulke N, Veasey RA. The long-term effect of thermal-guided second-generation cryoablation in paroxysmal and persistent atrial fibrillation. Indian Pacing Electrophysiol J 2021; 21:261-266. [PMID: 34038768 PMCID: PMC8414182 DOI: 10.1016/j.ipej.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/23/2021] [Accepted: 05/11/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Second-generation cryoballoon ablation is safe and effective in patients with paroxysmal (PAF) and persistent atrial fibrillation (AF). OBJECTIVE This study aimed to assess the long-term clinical outcomes and freedom from AF in patients undergoing thermal-guided cryoablation without the use of an electrical mapping catheter. METHODS All patients who had undergone thermal-guided second-generation cryoablation without electrical mapping between January 2015 and April 2018 at Eastbourne District General Hospital were retrospectively analysed. Success was defined as freedom from atrial arrhythmia lasting >30 s during the follow up period. RESULTS The study included 234 patients with a mean age of 65.3 ± 10.6 years. There were 134 (57.0%) and 100 (42.7%) patients who had PAF and persistent AF respectively. Arrhythmia recurrence occurred in 38 of 134 (28.4%) PAF and 42 of 100 (42.0%) persistent AF patients after mean follow up of 40 ± 9.2 months. The patients with PAF had a significantly greater freedom from arrhythmia than patients with persistent AF (p = .040). The mean procedure time was 55.5 ± 12.2 min and the mean fluoroscopy time was 10.9 ± 4.8 min 73.5% of patients were discharged on the same day. CONCLUSION Thermal-guided cryoablation is feasible, safe and results in freedom from arrhythmia in the majority of paroxysmal and persistent AF patients in the long term. Randomised controlled trials are required to confirm the findings of this study.
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Affiliation(s)
- Rajdip Dulai
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK.
| | - Christopher Patrick Uy
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
| | - Yasmin Kassir
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
| | - Veniza Anne Maravilla
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
| | - Nikhil Patel
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
| | - Stephen Furniss
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
| | - Neil Sulke
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
| | - Rick A Veasey
- Cardiology Research Department, Eastbourne District General Hospital, Kings Drive, Eastbourne, BN21 2UD, UK
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24
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Tilz RR, Meyer-Saraei R, Eitel C, Fink T, Sciacca V, Lopez LD, Kirstein B, Schlüter M, Vogler J, Kuck KH, Heeger CH. Novel Cryoballoon Ablation System for Single Shot Pulmonary Vein Isolation - The Prospective ICE-AGE-X Study. Circ J 2021; 85:1296-1304. [PMID: 33854004 DOI: 10.1253/circj.cj-21-0094] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The arctic front cryoballoon (AF-CB) provides effective and durable pulmonary vein isolation (PVI) associated with encouraging clinical outcome. The POLARx cryoballoon incorporates unique features and design changes that may translate into improved efficacy, safety and further simplified balloon-based procedures. Efficacy and safety of the novel POLARx cryoballoon was compared to the fourth generation AF-CB (AF-CB4).Methods and Results:Twenty-five consecutive patients with paroxysmal or persistent atrial fibrillation were prospectively enrolled, underwent POLARx-based PVI (POLARx group) and were compared to 25 consecutive patients treated with the AF-CB4 (AF-CB4 group). All PVs were successfully isolated utilizing the POLARx and AF-CB4. A significant difference regarding the mean minimal cryoballoon temperatures reached using the AF-CB4 and POLARx (-50±6℃ vs. -57±7℃, P=0.004) was observed. Real-time PVI was visualized in 81% of POLARx patients and 42% of AF-CB4 patients (P<0.001). Utilizing the POLARx, a trend towards shorter median procedure time (POLARx: 45 [39, 53] min vs. AF-CB4: 55 [50, 60] min; P=0.062) was found. No differences were observed between AF-CB4 and POLARx concerning catheter maneuverability, catheter stability and periprocedural complications. CONCLUSIONS The novel POLARx showed similar safety and efficacy compared to the AF-CB4. A higher rate of real-time PV recordings and significantly lower minimal balloon temperatures were observed using the POLARx.
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Affiliation(s)
- Roland Richard Tilz
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein.,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck
| | - Roza Meyer-Saraei
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Charlotte Eitel
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Thomas Fink
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Vanessa Sciacca
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Lisbeth Delgado Lopez
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Bettina Kirstein
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | | | - Julia Vogler
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Karl-Heinz Kuck
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein.,LANS Cardio
| | - Christian-H Heeger
- University Heart Center Lübeck, Division of Electrophysiology, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein.,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck
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25
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Sørensen SK, Johannessen A, Worck R, Hansen ML, Hansen J. Radiofrequency Versus Cryoballoon Catheter Ablation for Paroxysmal Atrial Fibrillation: Durability of Pulmonary Vein Isolation and Effect on Atrial Fibrillation Burden: The RACE-AF Randomized Controlled Trial. Circ Arrhythm Electrophysiol 2021; 14:e009573. [PMID: 33835823 PMCID: PMC8136462 DOI: 10.1161/circep.120.009573] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Supplemental Digital Content is available in the text. Background: Recurrent paroxysmal atrial fibrillation (AF) after catheter ablation is presumably caused by failure to achieve durable pulmonary vein isolation (PVI). The primary methods of PVI are radiofrequency catheter ablation (RF) and cryoballoon catheter ablation (CRYO), but these methods have not been directly compared with respect to PVI durability and the effect thereof on AF burden (% of time in AF). Methods: Accordingly, we performed a randomized trial including 98 patients (68% male, 61 [55–67] years) with paroxysmal AF assigned 1:1 to PVI by contact-force sensing, irrigated radiofrequency catheter, or second-generation cryoballoon catheter. Implantable cardiac monitors were inserted ≥1 month before PVI for assessment of AF burden and recurrence, and all patients, irrespective of AF recurrence, underwent a second procedure 4 to 6 months after PVI to determine PVI durability. Results: In the second procedure, 152 out of 199 (76%) pulmonary veins (PVs) were found durably isolated after RF and 161 out of 200 (81%) after CRYO (P=0.32), corresponding to durable isolation of all veins in 47% of patients in both groups (P=1.0). Median AF burden before PVI was 5.4% (interquartile range, 0.5%–13.0%) versus 4.0% (0.6%–18.1%), RF versus CRYO (P=0.71), and reduced to 0.0% (0.0%–0.1%) and 0.0% (0.0%–0.5%), respectively (P=0.58)—a reduction of 99.9% (92.9%–100.0%) and 99.3% (85.9%–100.0%; P=0.36). AF burden after PVI significantly correlated to the number of durably isolated PVs (P<0.01), but 9 out of 45 (20%) patients with durable isolation of all veins had recurrence of AF within 4 to 6 months after PVI (excluding a 3-month blanking period). Conclusions: PVI by RF and CRYO produce similar moderate to high PVI durability. Both treatments lead to marked reductions in AF burden, which is related to the number of durably isolated PVs. However, for one-fifth of paroxysmal AF patients, complete and durable PVI was not sufficient to prevent even short-term AF recurrence. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03805555.
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Affiliation(s)
- Samuel K Sørensen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - Arne Johannessen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - René Worck
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - Morten L Hansen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
| | - Jim Hansen
- Copenhagen University Hospital Gentofte, Gentofte Hospitalsvej 1, Hellerup, Denmark
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26
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Heeger CH, Bohnen JE, Popescu S, Meyer-Saraei R, Fink T, Sciacca V, Kirstein B, Hatahet S, Traub A, Lopez LD, Schlüter M, Kuck KH, Eitel C, Vogler J, Richard Tilz R. Experience and procedural efficacy of pulmonary vein isolation using the fourth and second generation cryoballoon: The shorter, the better? J Cardiovasc Electrophysiol 2021; 32:1553-1560. [PMID: 33760304 DOI: 10.1111/jce.15009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/16/2021] [Accepted: 03/05/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND The second-generation cryoballoon (CB2) provides effective and durable pulmonary vein isolation (PVI) associated with encouraging clinical outcome. The novel fourth-generation cryoballoon (CB4) incorporates a 40% shorter distal tip. This design change may translate into an increased rate of PVI real-time signal recording, facilitating an individualized ablation strategy using the time to effect (TTE). METHODS AND RESULTS Three hundred consecutive patients with paroxysmal or persistent atrial fibrillation were prospectively enrolled. The first 150 consecutive patients underwent CB2 based PVI (CB2 group) and the last 150 consecutive patients were treated with the CB4 (CB4 group). A total of 594/594 (100%, CB4) and 589/594 (99.2%, CB2) pulmonary veins (PVs) were successfully isolated utilizing the CB4 and CB2, respectively (p = .283). The real-time PVI visualization rate was 47% (CB4) and 39% (CB2; p = .005) and the mean freeze cycle duration 200 ± 90 s (CB4) and 228 ± 110 s (CB2; p < .001), respectively. The total procedure time did not differ between the groups (CB4: 64 ± 32 min) and (CB2: 62 ± 29 min, p = .370). No differences in periprocedural complications were detected. CONCLUSIONS A higher rate of real-time electrical PV recordings are seen using the CB4 as compared to CB2, which may facilitate an individualized ablation strategy using the TTE.
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Affiliation(s)
- Christian-Hendrik Heeger
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
| | - Jan-Eric Bohnen
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Sorin Popescu
- Carol Davila, University of Medicine and Pharmacy, Bucharest, Romania
| | - Roza Meyer-Saraei
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Thomas Fink
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Vanessa Sciacca
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Bettina Kirstein
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Sascha Hatahet
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Anna Traub
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Lisbeth D Lopez
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | | | - Karl-Heinz Kuck
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany.,LANS Cardio, Hamburg, Germany
| | - Charlotte Eitel
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Julia Vogler
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Roland Richard Tilz
- Department of Cardiology, Angiology and Intensive Care Medicine, Division of Electrophysiology, Medical Clinic II, University Heart Center Lübeck, University Hospital Schleswig-Holstein, Lübeck, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
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27
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Anic A, Lever N, Martin A, Breskovic T, Sulkin MS, Duffy E, Saliba WI, Niebauer MJ, Wazni OM, Varma N. Acute safety, efficacy, and advantages of a novel cryoballoon ablation system for pulmonary vein isolation in patients with paroxysmal atrial fibrillation: initial clinical experience. Europace 2021; 23:1237-1243. [PMID: 33729470 PMCID: PMC8350865 DOI: 10.1093/europace/euab018] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/09/2021] [Indexed: 11/13/2022] Open
Abstract
AIMS Cryoballoon pulmonary vein isolation (PVI) is a safe and effective treatment for atrial fibrillation (AF). Current limitations include incomplete vein occlusion due to balloon rigidity and inconsistent electrogram recording, which impairs identification of isolation. We aimed to evaluate the acute safety and performance of a novel cryoballoon system. METHODS AND RESULTS The system includes a steerable sheath, mapping catheter, and a balloon that maintains uniform inflation pressure and size following initiation of ablation. Protocol-directed cryoablation was delivered for 180 s for isolation documented in ≤60 s, otherwise freeze duration was 240 s. Primary endpoints were acute safety and vein isolation. Pulmonary vein isolation was confirmed at ≥30 min post-isolation. Data were compared across vein locations. Thirty patients with paroxysmal AF were enrolled at two centres and underwent PVI. Pulmonary vein isolation was achieved with cryoablation only in 100% of veins (120/120). Nadir temperature was -53.1 ± 5.3°C. The number of applications to achieve PVI was 1.4 ± 0.4 per vein. Of the 120 veins, 89 were isolated with a single cryothermal application (10/30 patients required only 4 total cryoablations). There were no procedural- or device-related serious adverse events at 30 days post-procedure. A subset (24/30) of patients was followed for 1-year and 71% (17/24) remained free of atrial arrhythmias. Six patients with arrhythmia recurrence were remapped and three had durable PVI for all four veins. CONCLUSION In this first human experience, the novel cryoballoon platform was safe, efficacious, and demonstrated a high proportion of successful single ablation isolation.
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Affiliation(s)
- Ante Anic
- Cardiovascular Diseases, University Hospital Center Split, Spinciceva 1, 21000 Split, Croatia
| | - Nigel Lever
- Cardiovascular Diseases, Green Lane Cardiovascular Services, Auckland City Hospital, Auckland, New Zealand
| | - Andrew Martin
- Cardiovascular Diseases, Green Lane Cardiovascular Services, Auckland City Hospital, Auckland, New Zealand
| | - Toni Breskovic
- Cardiovascular Diseases, University Hospital Center Split, Spinciceva 1, 21000 Split, Croatia
| | | | - Elizabeth Duffy
- Electrophysiology, Boston Scientific Corp., St. Paul, MN, USA
| | - Walid I Saliba
- Department for Cardiovascular Diseases, Cleveland Clinic Foundation, Heart and Vascular Institute, Cleveland, OH, USA
| | - Mark J Niebauer
- Department for Cardiovascular Diseases, Cleveland Clinic Foundation, Heart and Vascular Institute, Cleveland, OH, USA
| | - Oussama M Wazni
- Department for Cardiovascular Diseases, Cleveland Clinic Foundation, Heart and Vascular Institute, Cleveland, OH, USA
| | - Niraj Varma
- Department for Cardiovascular Diseases, Cleveland Clinic Foundation, Heart and Vascular Institute, Cleveland, OH, USA
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28
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Rzaev FH, Rachkova II, Nikolaeva OA, Gorev MV, Nardaia SG, Makarycheva OV, Vasilieva EY, Shpektor AV. Duration of Applications Affects the Long-Term Efficacy of Cryoballoon Ablation Pulmonary Veins. ACTA ACUST UNITED AC 2021; 61:28-35. [PMID: 33734053 DOI: 10.18087/cardio.2021.1.n1365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/18/2020] [Indexed: 11/18/2022]
Abstract
Aim To evaluate the effect of cryo-exposure duration and the use of the Achieve circular mapping catheter on efficacy of cryoballoon ablation (CBA).Material and methods CBA of pulmonary vein ostia (PVO) is a major method for heart rhythm control in patients with atrial fibrillation (AF). Since the inception, the PVO CBA method has evolved; the recommended application time was changed, and the Achieve circular catheter appeared. We performed a retrospective analysis of PVO CBA administered to patients with AF in the I.V. Davydovsky Municipal Clinical Hospital from 2017 through 2019. The study included 100 patients with available clinical and demographic characteristics and remote results of the intervention. Three patient groups were analyzed based on differences in surgical techniques: group 1, Guidewire / 240 (n=31) with the cryoballoon placing on a guidewire and PVO exposure duration of 240 s; group 2, Guidewire / 180 (n=26) with the cryoballoon placing on a guidewire and PVO exposure duration of 180 s; and group 3, Achieve / 180 (n=43) with the cryoballoon placing on the mapping catheter Achieve and PVO exposure duration of 180 с. The follow-up period was 33.2±4.5, 15.2±6.1, and 12.2±4.1 months in the Guidewire / 240, Guidewire / 180, and Achieve / 180 groups, respectively. The intervention was considered effective when there was no relapse at the time of interview. A relapse of AF was determined as one or more paroxysms recorded on electrocardiogram (ECG) or during 24-h ECG monitoring; the "blind period" (first 3 months after the procedure) was excluded from the follow-up. Safety evaluation included clinically significant complications, such as phrenic nerve damage, hemopericardium, gastroparesis, hemoptysis, acute cerebrovascular disease, and formation of atrio-esophageal fistula. Effects of independent factors were determined with binary logistic regression.Results In the Guidewire / 240 group, efficacy of PVO CBA for the maximum follow-up period was 74.4%, which was significantly different from the value for the Guidewire / 180 group (57.7 %, р=0.015). At the same time, the difference between the Guidewire / 240 and Achieve / 180 groups was statistically non-significant for a comparable follow-up period (р=0.144). Clinically significant complications were absent in all 3 groups. The independent factors that significantly increased the PVO CBA efficacy were the cryo-exposure duration of 240 s compared to 180 s (р= 0.018) and the use of the Achieve catheter (р=0.014).Conclusion Decreasing the cryo-exposure duration to less than 240 s is impractical (in absence of Achieve mapping catheter) since it impairs the long-term efficacy of PVO CBA and does not influence the risk of complications.
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Affiliation(s)
- F H Rzaev
- Clinical City Hospital named after I.V. Davydovsky, Moscow Department of Healthcare, Moscow
| | - Iu I Rachkova
- Clinical City Hospital named after I.V. Davydovsky, Moscow Department of Healthcare, Moscow
| | - O A Nikolaeva
- Clinical City Hospital named after I.V. Davydovsky, Moscow Department of Healthcare, Moscow
| | - M V Gorev
- Clinical City Hospital named after I.V. Davydovsky, Moscow Department of Healthcare, Moscow
| | - Sh G Nardaia
- Clinical City Hospital named after I.V. Davydovsky, Moscow Department of Healthcare, Moscow
| | - O V Makarycheva
- Moscow State University of Medicine and Dentistry named after A.I. Evdokimov, Moscow
| | - E Yu Vasilieva
- Moscow State University of Medicine and Dentistry named after A.I. Evdokimov, Moscow
| | - A V Shpektor
- Moscow State University of Medicine and Dentistry named after A.I. Evdokimov, Moscow
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Mizutani Y, Inden Y, Yanagisawa S, Kanashiro M, Makino Y, Satake A, Kurobe M, Ichimiya H, Uchida Y, Watanabe J, Ichimiya S, Murohara T. Disappearance pattern and the last remaining earliest pulmonary vein potential during cryoballoon ablation in predicting recurrence and conduction gap site of pulmonary veins. Heart Vessels 2021; 36:1190-1200. [PMID: 33496818 DOI: 10.1007/s00380-021-01785-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/08/2021] [Indexed: 10/22/2022]
Abstract
Electrophysiological studies have rarely evaluated the sites prone to pulmonary vein (PV) conduction gap during cryoballoon ablation (CBA) for atrial fibrillation (AF). In addition, no studies have analyzed the sequence of PV potentials just before PV isolation during CBA for AF. Of the 238 patients who underwent first-time CBA for paroxysmal AF, 115 PVs of 29 patients who underwent repeat session due to recurrence after the procedure were retrospectively evaluated in the study. We evaluated the disappearance pattern of PV potential and PV reconnection on intracardiac electrograms and investigated whether the conduction gap site of the PV was related to the last remaining earliest PV potential (EP) and sequence pattern during the first-time CBA. Time to isolation was observed in 81 PVs during the first-time CBA. At the repeat session, PV reconnection was only observed in 22 of 81 PVs. PV potentials disappeared with sequence changes in 36 PVs and without sequence changes in 38 PVs. Multivariate analysis demonstrated that disappearance of PV potentials without change in the EP site but with delay or disappearance of other PV potentials was independently associated with PV reconnection (12/22 PVs [55%] vs. 4/59 PVs [6.8%]; odds ratio 14.4; 95% confidence interval 3.75-55.5; p < 0.001). In 19 of 22 (86%) reconnected PVs, PV conduction gap sites at repeat ablation corresponded with the last remaining EP sites during first-time CBA. In conclusion, disappearance pattern of the PV potential and the last remaining EP during the CBA can predict PV reconnection and gap site.
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Affiliation(s)
- Yoshiaki Mizutani
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan. .,Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Satoshi Yanagisawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Masaaki Kanashiro
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Yuichiro Makino
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Akinori Satake
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Masanari Kurobe
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Hitoshi Ichimiya
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Yasuhiro Uchida
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Junji Watanabe
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Satoshi Ichimiya
- Department of Cardiology, Yokkaichi Municipal Hospital, 2-2-37, Shibata, Yokkaichi, Mie, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Mathew S, Rottner L, Warneke L, Maurer T, Lemes C, Hashiguchi N, Reißmann B, Goldmann B, Ouyang F, Kuck KH, Metzner A, Rillig A. Initial experience and procedural efficacy of pulmonary vein isolation using the fourth-generation cryoballoon - a step forward? Acta Cardiol 2020; 75:754-759. [PMID: 31630633 DOI: 10.1080/00015385.2019.1677373] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: Cryoballoon (CB)-based pulmonary vein isolation (PVI) is an established treatment modality for patients suffering from paroxysmal or persistent atrial fibrillation (AF). Recently, the novel fourth-generation cryoballoon (CB4) was introduced which mainly provides a 40% shorter distal tip as compared to the second-generation cryoballoon (CB2). This two-centre analysis sought to assess the primary efficacy of the 28 mm CB4 for PVI and the feasibility of real-time signal recordings from the PVs considering the time-to-isolation (TTI).Methods and results: Eighty-four patients with paroxysmal or short-standing persistent AF underwent CB4-based PVI at two different hospitals. Individual freeze-cycle duration was set at TTI + 120 seconds. No bonus freeze was applied. A total of 331 pulmonary veins (PVs) including five left common PVs were identified and all PVs were successfully isolated. Mean freeze-cycle duration was 165.7 ± 31.5 seconds. The mean minimal CB temperature was -45.6 ± 7.6 °C with a real-time PVI visualisation rate of 78% (67/84 (79.8%) RSPVs, 55/84 (65.5%) RIPVs, 67/79 (84.8%) LSPVs, 66/79 (83.5%) LIPVs and 2/5 (40%) LCPV). Transient phrenic nerve palsy occurred in 2/84 (2.4%) patients during cryo-application along the RSPV.Conclusions: The novel CB4 provides both, a high acute efficacy and a high rate of real time electrical PV-recordings, thus facilitating individual ablation strategies based on TTI.
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Affiliation(s)
- Shibu Mathew
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | - Laura Rottner
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | - Laura Warneke
- Department of Cardiology, Asklepios Klinikum Harburg, Hamburg, Germany
| | - Tilman Maurer
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | - Christine Lemes
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | | | - Bruno Reißmann
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | - Britta Goldmann
- Department of Cardiology, Asklepios Klinikum Harburg, Hamburg, Germany
| | - Feifan Ouyang
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | - Karl-Heinz Kuck
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
| | - Andreas Metzner
- Department of Cardiology, Asklepios Klinikum Harburg, Hamburg, Germany
| | - Andreas Rillig
- Department of Cardiology, Asklepios Klinik St. George, Hamburg, Germany
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31
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Keeping it Simple: Balloon Devices for Atrial Fibrillation Ablation Therapy. JACC Clin Electrophysiol 2020; 6:1577-1596. [PMID: 33213820 DOI: 10.1016/j.jacep.2020.08.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 11/22/2022]
Abstract
Atrial fibrillation is a common disease of increasing prevalence. Catheter ablation has evolved into an established therapeutic option that mainly aims to electrically isolate the pulmonary veins from atrial myocardium. The traditional method comprises point-by-point radiofrequency current ablation guided by electroanatomical mapping and has proven to be effective and safe in experienced hands. However, this approach is technically highly demanding and associated with a long learning curve, limiting its widespread utilization. To address these shortcomings, simplified ablation tools for pulmonary vein isolation are needed. In this context, balloon devices promise to ease the procedure by approaching the entire orifice of a targeted pulmonary vein in a single maneuver. This requires less catheter manipulation in the left atrium and often allows ablation of a large volume of tissue with a single application of ablative energy. Two balloon devices-one using cryoenergy, the other laser energy-have already been established in clinical routine and have demonstrated noninferiority when compared with radiofrequency ablation in large randomized trials. More balloon devices are on the verge of being introduced into clinical practice and bear the potential to expand the interventional electrophysiologist's armamentarium when treating atrial fibrillation. The authors review the use of the established balloon devices available for atrial fibrillation ablation and provide a detailed outlook on upcoming balloon technologies, including 3 different balloons utilizing radiofrequency energy as well as a novel cryoballoon.
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32
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B Patel R, Somerville C, Gong FF, C Peters A, J Shah S, B Chicos A, Kim S, P Knight B, Lin A, Verma N, S Passman R. Association of the H 2FPEF Risk Score with Recurrence of Atrial Fibrillation Following Pulmonary Vein Isolation. J Atr Fibrillation 2020; 12:2295. [PMID: 33024491 DOI: 10.4022/jafib.2295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 12/25/2019] [Accepted: 01/19/2020] [Indexed: 01/14/2023]
Abstract
Background While atrial fibrillation (AF) and heart failure with preserved ejection fraction (HFpEF) commonly coexist, the efficacy of pulmonary vein isolation in the setting of HFpEF is unclear. Methods In a cohort of patients who underwent cryoballoon ablation (CBA) from 2011 to 2016, we calculated the H2FPEF risk score, a novel 6-item score (scale: 0-9 points) that accurately predicts the probability of HFpEF. We compared characteristics of patients by H2FPEF score and evaluated the association of H2FPEF score with 12-month recurrence of AF post-procedure. Results Of patients with available data to calculate the H2FPEF score (n=105), the median H2FPEF score was 5 (interquartile range: 4-6), corresponding to >80% probability of HFpEF. Compared to patients with H2FPEF scores ≤4 (n=34), patients with H2FPEF scores of 5 and 6 (n=46) and ≥7 (n=25) carried higher rates of hypertension (≤4: 21% vs. 5 and 6: 63% vs. ≥7: 88%, P<0.001) and diabetes (≤4: 0% vs. 5 and 6: 9% vs. ≥7: 32%, P=0.001). The overall 12-month recurrence rate of AF was 21%. There was no association between H2FPEF score and recurrence of AF at 12 months (OR per SD increase in log-H2FPEF score: 0.87, 95% CI: 0.54-1.40, P=0.57). Conclusions Among patients undergoing CBA for AF, median H2FPEF scores are elevated, and screening for occult HFpEF may be warranted in this population. There was no association of the H2FPEF score and AF recurrence at 12 months, suggesting efficacy of CBA even among patients with high H2FPEF scores.
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Affiliation(s)
- Ravi B Patel
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL.,Contributed equally to this manuscript
| | - Caitlin Somerville
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL.,Contributed equally to this manuscript
| | - Fei Fei Gong
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Andrew C Peters
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Sanjiv J Shah
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Alexandru B Chicos
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Susan Kim
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Bradley P Knight
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Albert Lin
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Nishant Verma
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Rod S Passman
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
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Bisignani A, Overeinder I, Kazawa S, Iacopino S, Cecchini F, Miraglia V, Osório TG, Boveda S, Bala G, Mugnai G, Monaco C, Ströker E, Brugada P, Sieira J, Galli A, de Asmundis C, Chierchia GB. Posterior box isolation as an adjunctive ablation strategy with the second-generation cryoballoon for paroxysmal atrial fibrillation: a comparison with standard cryoballoon pulmonary vein isolation. J Interv Card Electrophysiol 2020; 61:313-319. [DOI: 10.1007/s10840-020-00812-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/29/2020] [Indexed: 10/23/2022]
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Anwar O, Gunawardene MA, Dickow J, Scherschel K, Jungen C, Münkler P, Eickholt C, Willems S, Gessler N, Meyer C. Contemporary analysis of phrenic nerve injuries following cryoballoon-based pulmonary vein isolation: A single-centre experience with the systematic use of compound motor action potential monitoring. PLoS One 2020; 15:e0235132. [PMID: 32584880 PMCID: PMC7316283 DOI: 10.1371/journal.pone.0235132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 06/09/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Phrenic nerve injury (PNI) remains one of the most frequent complications during cryoballoon-based pulmonary vein isolation (CB-PVI). Since its introduction in 2013, the use of compound motor action potential (CMAP) for the prevention of PNI during CB-PVI is increasing; however, systematic outcome data are sparse. METHODS The CMAP technique was applied in conjunction with abdominal palpation during pacing manoeuvres (10 mV, 2 ms) from the superior vena cava for 388 consecutive patients undergoing CB-PVI between January 2015 and May 2017 at our tertiary arrhythmia centre. Cryoablation was immediately terminated when CMAP amplitude was reduced by 30%. RESULTS Reductions in CMAP amplitude were observed in 16 (4%) of 388 patients during isolation of the right veins. Of these, 11 (69%) patients did not manifest a reduction in diaphragmatic excursions. The drop in CMAP amplitude was observed in 10 (63%) patients during ablation of the right superior pulmonary veins (PVs) and in 7 (44%) patients during ablation of the right inferior PVs. Postprocedural persistent PNI was observed in three of four patients for a duration of 6 months, with one of these patients remaining symptomatic at the 24-month follow-up. One of the four patients was lost to long-term follow-up. CONCLUSIONS All PNIs occurred during right-sided CB-PVI and were preceded by a reduction in CMAP amplitude. Thus, the standardized use of CMAP surveillance during CB-PVI is easily applicable, reliable and compared with other studies, results in a lower number of PNIs.
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Affiliation(s)
- Omar Anwar
- Department of Cardiology, Asklepios Clinic St. Georg, Faculty of Medicine, Semmelweis University Campus Hamburg, Hamburg, Germany
| | - Melanie A. Gunawardene
- Department of Cardiology, Asklepios Clinic St. Georg, Faculty of Medicine, Semmelweis University Campus Hamburg, Hamburg, Germany
| | - Jannis Dickow
- Department of Cardiac Electrophysiology, Heart and Vascular Centre, University Hospital Hamburg Eppendorf, Hamburg, Germany
| | - Katharina Scherschel
- Department of Cardiac Electrophysiology, Heart and Vascular Centre, University Hospital Hamburg Eppendorf, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
- Division of Cardiology, cardiac Neuro- and Electrophysiology Research Consortium (cNEP), EVK Düsseldorf, Düsseldorf, Germany
| | - Christiane Jungen
- Department of Cardiac Electrophysiology, Heart and Vascular Centre, University Hospital Hamburg Eppendorf, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
| | - Paula Münkler
- Department of Cardiac Electrophysiology, Heart and Vascular Centre, University Hospital Hamburg Eppendorf, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
| | - Christian Eickholt
- Department of Cardiology, Asklepios Clinic St. Georg, Faculty of Medicine, Semmelweis University Campus Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
| | - Stephan Willems
- Department of Cardiology, Asklepios Clinic St. Georg, Faculty of Medicine, Semmelweis University Campus Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
| | - Nele Gessler
- Department of Cardiology, Asklepios Clinic St. Georg, Faculty of Medicine, Semmelweis University Campus Hamburg, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
| | - Christian Meyer
- Department of Cardiac Electrophysiology, Heart and Vascular Centre, University Hospital Hamburg Eppendorf, Hamburg, Germany
- DZHK (German Center for Cardiovascular Research), partner site Hamburg/Kiel/Luebeck, Berlin, Germany
- Division of Cardiology, cardiac Neuro- and Electrophysiology Research Consortium (cNEP), EVK Düsseldorf, Düsseldorf, Germany
- Cardiac Neuro- and Electrophysiology Research Consortium (cNEP), Institute for Neural and Sensory Physiology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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Chen S, Schmidt B, Bordignon S, Tohoku S, Urbanek L, Plank K, Willems F, Throm C, Konstantinou A, Hilbert M, Zanchi S, Bianchini L, Bologna F, Tsianakas N, Kreuzer C, Nagase T, Perrotta L, Last J, Chun KRJ. Cryoballoon pulmonary vein isolation in treating atrial fibrillation using different freeze protocols: The “ICE‐T 4 minutes vs 3 minutes” propensity‐matched study (Frankfurt ICE‐T 4 vs. 3). J Cardiovasc Electrophysiol 2020; 31:1923-1931. [DOI: 10.1111/jce.14602] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 05/31/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Shaojie Chen
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
- Die Sektion MedizinUniversität zu Lübeck Lübeck Germany
| | - Boris Schmidt
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Stefano Bordignon
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Shota Tohoku
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Lukas Urbanek
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Karin Plank
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Franziska Willems
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Christina Throm
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Athanasios Konstantinou
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Max Hilbert
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Simone Zanchi
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Lorenzo Bianchini
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Fabrizio Bologna
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Nikolaos Tsianakas
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Claudia Kreuzer
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Takahiko Nagase
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Laura Perrotta
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - Jana Last
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
| | - K. R. Julian Chun
- Cardioangiologisches Centrum Bethanien (CCB), Frankfurt Academy For Arrhythmias (FAFA); Kardiologie, Medizinische Klinik IIIAgaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe‐Universität Frankfurt am Main Frankfurt am Main Germany
- Medizinische Klinik II, Kardiologie/Angiologie/IntensivmedizinUniversitätsklinikum Schleswig‐Holstein, Universität zu Lübeck Lübeck Germany
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36
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Cryoballoon versus radiofrequency ablation for paroxysmal atrial fibrillation in hemodialysis patients. Heart Vessels 2020; 35:1709-1716. [PMID: 32524235 DOI: 10.1007/s00380-020-01646-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/05/2020] [Indexed: 10/24/2022]
Abstract
INTRODUCTION Little evidence exists regarding cryoballoon ablation (CBA) of paroxysmal atrial fibrillation (PAF) in hemodialysis (HD) patients. We compared CBA and radiofrequency ablation (RFA) of PAF in HD patients, referring to CBA of PAF in non-HD patients. METHODS AND RESULTS This historical cohort study examined 88 patients who underwent catheter ablation of PAF, including 21 HD patients with a second-generation 28-mm cryoballoon (CB-HD group), 17 HD patients with a non-force-sensing radiofrequency catheter (RF-HD group), and 50 non-HD patients with a cryoballoon (CB-non-HD group). Pulmonary vein (PV) isolation alone aside from cavotricuspid isthmus ablation was performed in 14 (67%) in the CB-HD group, 12 (71%) in the RF-HD group, and 36 (72%) in the CB-non-HD group (P = 0.95), without isoproterenol-induced non-PV triggers. Non-PV trigger ablation was added to the other patients. The Kaplan-Meier estimated 1-year freedom from atrial tachyarrhythmia recurrence without antiarrhythmic drugs after a single procedure was 76%, 59%, and, 92% in the CB-HD, RF-HD, and CB-non-HD groups, respectively (P = 0.002). The mean procedure time was shorter in the CB-HD group than in the RF-HD group (127 vs. 199 min; P < 0.001). In the second procedure, the median number of reconnected pulmonary veins was 0.5 in the CB-HD group versus 2.0 in the RF-HD group (P = 0.17). CONCLUSION For PAF in HD patients, CBA showed a comparable single-procedure efficacy to that of RFA with a short procedure time. CBA may be a reasonable initial procedure for HD patients suffering from symptomatic PAF.
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Heeger CH, Rexha E, Maack S, Rottner L, Fink T, Mathew S, Maurer T, Lemeš C, Rillig A, Wohlmuth P, Reissmann B, Tilz RR, Ouyang F, Kuck KH, Metzner A. Reconduction After Second-Generation Cryoballoon-Based Pulmonary Vein Isolation ― Impact of Different Ablation Strategies ―. Circ J 2020; 84:902-910. [DOI: 10.1253/circj.cj-19-1144] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christian-Hendrik Heeger
- University Heart Center Lübeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
- German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck
- Department of Cardiology, Asklepios Klinik St. Georg
| | - Enida Rexha
- Department of Cardiology, Asklepios Klinik St. Georg
| | - Sabrina Maack
- Department of Cardiology, Asklepios Klinik St. Georg
| | | | - Thomas Fink
- University Heart Center Lübeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Shibu Mathew
- Department of Cardiology, Asklepios Klinik St. Georg
| | - Tilman Maurer
- Department of Cardiology, Asklepios Klinik St. Georg
| | | | | | | | | | - Roland Richard Tilz
- University Heart Center Lübeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
| | - Feifan Ouyang
- University Heart Center Lübeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
- Department of Cardiology, Asklepios Klinik St. Georg
- Fuwai Hospital/National Center of Cardiovascular Diseases
| | - Karl-Heinz Kuck
- University Heart Center Lübeck, Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein
- Department of Cardiology, Asklepios Klinik St. Georg
| | - Andreas Metzner
- Department of Cardiology, Asklepios Klinik St. Georg
- University Heart Center Hamburg
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Hara S, Miyazaki S, Hachiya H, Kajiyama T, Watanabe T, Nakamura H, Tada H, Iesaka Y. Long-term outcomes after second-generation cryoballoon ablation of paroxysmal atrial fibrillation - Feasibility of a single short freeze strategy without bonus applications. Int J Cardiol 2020; 306:90-94. [PMID: 32087938 DOI: 10.1016/j.ijcard.2020.02.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/02/2020] [Accepted: 02/12/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND A paucity of data exists about long-term outcomes after second-generation cryoballoon ablation (2nd-CBA), and the feasibility of short freeze strategies remains under debate. We assessed the long-term follow-up outcomes. METHODS This study included 186 paroxysmal atrial fibrillation (PAF) patients (62 ± 11 years, 136 men) who underwent 2nd-CBAs with a 28-mm balloon and single 3-min freeze strategy without bonus applications. Fourteen-day consecutive monitoring was performed to detect early AF recurrences (ERAFs). RESULTS Overall, 713/736(96.9%) PVs were isolated with CBs. The total number of applications/patient was 5.3 ± 1.5. The total procedure and fluoroscopic times were 79.9 ± 28.1 and 24.4 ± 14.2 min. Asymptomatic right phrenic nerve injury occurred in 11 patients, however, all recovered during the follow-up. A total of 76(41.7%) patients experienced ERAFs. During a median 45.0 [30.0-51.0] month follow-up, the single procedure AF freedom was 76.1, 73.5, 70.5, and 63.7% at 1, 2, 3, and 4 years, respectively. At a median of 7.0 [4.0-12.0] months after the initial procedure, 35 (18.8%) patients underwent second procedures, and 106/137 (77.4%) PVs were still isolated. The multiple procedure AF freedom was 91.7, 89.3, 86.8, and 81.3% at 1, 2, 3, and 4 years, respectively. A Cox's proportional hazards model determined that the presence of ERAF was associated with a greater risk of recurrence after the last procedure (Hazard ratio = 2.830; 95% confidence interval = 1.173-6.833; p = 0.021). The percentage of continuation of anticoagulation therapy after the initial procedure was 33.1, 23.5, 21.7, and 21.7% at 1, 2, 3, and 4 years, respectively. CONCLUSIONS Our long-term follow-up data demonstrated the feasibility of a single short freeze strategy in PAF patients.
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Affiliation(s)
- Satoshi Hara
- Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan
| | - Shinsuke Miyazaki
- Department of Cardiovascular medicine, Fukui University, Fukui, Japan.
| | - Hitoshi Hachiya
- Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan
| | - Takatsugu Kajiyama
- Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan
| | - Tomonori Watanabe
- Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan
| | - Hiroaki Nakamura
- Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan
| | - Hiroshi Tada
- Department of Cardiovascular medicine, Fukui University, Fukui, Japan
| | - Yoshito Iesaka
- Cardiovascular Center, Tsuchiura Kyodo Hospital, Tsuchiura, Ibaraki, Japan
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Strategies to Improve the Outcome of Cryoballoon Ablation in the Treatment of Atrial Fibrillation. BIOMED RESEARCH INTERNATIONAL 2020; 2020:6720481. [PMID: 32337265 PMCID: PMC7166274 DOI: 10.1155/2020/6720481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 03/24/2020] [Indexed: 11/18/2022]
Abstract
Atrial fibrillation (AF) is a common arrhythmia contributing to severe outcomes, including cardiac dysfunction and stroke, and it has drawn great attention around the world. Drug therapies have been available for many years to terminate AF and control heart rate. However, the results from clinical studies on drug therapies have been discouraging. Mounting evidence indicates that radiofrequency catheter ablation (RFCA) is a safe and effective method to maintain sinus rhythm, especially in patients who are drug intolerant or for whom the drugs are ineffective, although it is a technically demanding and complex procedure. Fortunately, a novel application, cryoballoon ablation (CBA), with outstanding characteristics has been widely used. Great outcomes based on CBA have manifested its significant role in the treatment of AF. However, how to improve the safety and efficacy of CBA is a question that has not been well-answered. Would it be helpful to develop a different generation of cryoballoon? Is bonus freezing beneficial, or not? Is it better to prolong freezing time? Dose CBA combined with RFCA bring higher success rates? In this review, we comprehensively summarized useful applications for improving outcomes of CBA in AF patients.
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Maj R, Osório TG, Borio G, Iacopino S, Ströker E, Sieira J, Terasawa M, Kazawa S, Rizzo A, Galli A, Varnavas V, Bala G, Galloo X, Paparella G, Brugada P, De Greef Y, De Asmundis C, Chierchia GB. A novel strategy to treat vaso-vagal syncope: Cardiac neuromodulation by cryoballoon pulmonary vein isolation. Indian Pacing Electrophysiol J 2020; 20:154-159. [PMID: 32224089 PMCID: PMC7371945 DOI: 10.1016/j.ipej.2020.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/05/2020] [Accepted: 03/22/2020] [Indexed: 01/02/2023] Open
Abstract
Background Clinical management of vaso-vagal syncope (VVS) remains challenging since no therapy has proven to completely prevent VVS recurrence. Objective The purpose of this study was to analyze the mid-term outcome of cryoballoon (CB) cardioneuroablation achieved by pulmonary vein isolation (PVI) in patients with VVS. Methods Patients who underwent CB cardioneuroablation in our centers between January 2014 to June 2018 were included. All patients had a history of VVS or pre-syncope despite therapeutic attempts with medical and/or pacing treatments. Patients were excluded in case of structural heart diseases, cerebrovascular diseases or suspected drug-related syncope. Both heart rate (HR) and atrio-ventricular (AV) interval were analyzed on the 12-lead electrocardiogram (ECG) the day before the procedure, the day after, and in the follow-up. Results In total, 26 patients (76.9% males, 37.5 ± 9.0 years old) were included. All patients underwent a successful procedure with the 28 mm second-generation Arctic Front Advance CB. No major complication occurred. At a mean follow-up of 20.1 ± 11.6 months the freedom from VVS or reflex pre-syncope was 83,7%, with 22 patients free from any clinical recurrence. Basal HR significantly increased the day after the procedure (57.2 bpm vs 78.3 bpm, p < 0.001), while at the final follow-up it stabilized at a value halfway between the 2 previous ones (69.8 bpm, p = 0.0086). The AV interval didn’t modify significantly after the procedure. Conclusion Endocardial autonomic denervation achieved by CB PVI appears to be an effective and safe treatment option for patients with refractory VVS and reflex pre-syncope.
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Affiliation(s)
- Riccardo Maj
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium.
| | | | - Gianluca Borio
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Saverio Iacopino
- Electrophysiology Unit, Villa Maria Cecilia, Via Corriera, 1, 48033, Cotignola, RA, Italy
| | - Erwin Ströker
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Juan Sieira
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Muryo Terasawa
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Shuichiro Kazawa
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Alessandro Rizzo
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Alessio Galli
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Varnavas Varnavas
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Gezim Bala
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Xavier Galloo
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Gaetano Paparella
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Pedro Brugada
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Yves De Greef
- Electrophysiology Unit, ZNA Middelheim, Lindendreef 1, 2020, Antwerp, Belgium
| | - Carlo De Asmundis
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
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Maj R, Borio G, Osório TG, Iacopino S, Ströker E, Sieira J, Terasawa M, Rizzo A, Scala O, Galli A, Varnavas V, Paparella G, Capulzini L, Brugada P, De Asmundis C, Chierchia GB. Conversion of atrial fibrillation to sinus rhythm during cryoballoon ablation: A favorable and not unusual phenomenon during second-generation cryoballoon pulmonary vein isolation. J Arrhythm 2020; 36:319-327. [PMID: 32256881 PMCID: PMC7132212 DOI: 10.1002/joa3.12301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/05/2019] [Accepted: 12/26/2019] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND The prevalence and the clinical impact of conversion of atrial fibrillation (AF) to sinus rhythm (SR) during cryoballoon ablation (CB-A) are unknown. OBJECTIVE The purpose of this study was to evaluate the prevalence of restoration of SR during CB-A and the clinical impact of this phenomenon. METHODS Between January 2012 and September 2018, all patients who experienced conversion of AF to SR during CB-A were included. This group was subsequently matched for gender, age, type of AF, diagnosis-to-ablation time, and left atrial size with patients who underwent CB-A and did not experienced conversion of AF to SR. After discharge, patients were scheduled for follow-up visits at 1, 3, 6, and 12 months and 24 hours Holter recordings were obtained at each follow-up visit. All documented AF episodes of >30 seconds were considered as recurrence. A 3 month post-procedural blanking period (BP) was applied. RESULTS A total of 1559 patients underwent pulmonary veins isolation by CB-A between January 2012 and September 2018; among them, 58 patients (3.7%) experienced restoration of SR during CB-A. In total, 53 patients (41 males [77.3%], mean age 61.4 ± 13.3 years) were included in the case group. During CB-A, restoration of SR occurred more frequently during right-side PVs applications (right inferior pulmonary vein 39.6%, right superior pulmonary vein 30.2%). If considering a BP, at 2 year follow-up, freedom from recurrences was 86.5% in the case group and 68.0% in the control group (P = .036). CONCLUSION Conversion of AF to SR is a favorable and relatively frequent phenomenon during cryoballoon pulmonary vein isolation ablation.
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Affiliation(s)
- Riccardo Maj
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | - Gianluca Borio
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | | | | | - Erwin Ströker
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | - Juan Sieira
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | - Muryo Terasawa
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | | | - Oriana Scala
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | - Alessio Galli
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
| | | | | | | | - Pedro Brugada
- Heart Rhythm Management CenterUZ Brussel‐VUBBrusselsBelgium
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Wei HQ, Li J, Sun Q, Guo XG, Wang HY, Yang JD, Xie HY, Liang JJ, Zhang S, Ma J. Safety and efficacy of superior vena cava isolation using the second-generation cryoballoon ablation in a canine model. J Cardiol 2020; 75:368-373. [PMID: 31522792 DOI: 10.1016/j.jjcc.2019.08.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/08/2019] [Accepted: 08/19/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND The safety and efficacy of superior vena cava (SVC) isolation (SVCI) using second-generation cryoballoon (CB) ablation remains unknown. METHODS Electrical isolation of SVC was attempted using the second-generation CB ablation catheter in 14 canines. Ablation duration was randomized to either 90 s (7 canines) or 120 s (7 canines). SVC venography was performed to identify the SVC-right atrium (RA) junction. The 28-mm CB was positioned above SVC-RA junction. Repeat electrophysiological assessment in the live animals was conducted 40-60 days post-ablation, after which animals were euthanized for histological examination. RESULTS Acute SVCI was successfully performed in all canines. No significant differences in numbers of freezes (1.7 ± 0.8 vs. 1.5 ± 0.5, p = 0.658), time to isolation (TTI) (24.3 ± 8.1s vs. 22.7 ± 9.0s, p = 0.297), temperature at isolation (-23.4 ± 12.5 °C vs. -21.5 ± 11.1 °C, p = 0.370), and nadir temperature (-51.2 ± 6.2 °C vs. -53.3 ± 7.0 °C, p = 0.195) were observed between the 90-s and 120-s groups. There were no procedural complications except one transient sinus bradycardia in the 120-s group. After ablation, animals survived for 51 ± 5 days. Chronic SVCI was achieved in 6 of 7 (85.7%) SVCs in the 90-s group and 7 of 7 SVCs (100%) in the 120-s group (p = 0.299). Histological analysis revealed that a circumferential transmural lesion was achieved in all isolated SVCs. No sinus node (SN) and phrenic nerve injuries were observed. The minimum distance between ablation lesion and SN was 5.1 ± 3.0 mm. CONCLUSIONS The second-generation CB ablation catheter is both safe and effective in achieving SVC isolation in a canine model. Effective SVCI was found in the 90-s dosing strategy.
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Affiliation(s)
- Hui-Qiang Wei
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Science, Guangzhou, China
| | - Jin Li
- Department of Cardiology, Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qi Sun
- Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao-Gang Guo
- Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hong-Yue Wang
- Department of Pathology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jian-Du Yang
- Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hai-Yang Xie
- Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jackson J Liang
- Electrophysiology Section, Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Shu Zhang
- Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jian Ma
- Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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The effect of second-generation cryoablation without electrical mapping in persistent AF using continuous monitoring. J Interv Card Electrophysiol 2020; 60:175-182. [PMID: 32147799 DOI: 10.1007/s10840-020-00721-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/24/2020] [Indexed: 01/20/2023]
Abstract
BACKGROUND Second-generation cryoballoon ablation is safe and effective in patients with persistent atrial fibrillation (AF). The aim of this study is to report the real long-term AF burden and freedom from AF post-cryoablation using continuous monitoring, and to assess whether intraoperative confirmation of pulmonary vein isolation using electrical mapping is necessary. METHODS A total of 33 patients (mean age 75.7 ± 5.6 years, 16 men) with persistent AF who underwent second-generation cryoablation without electrical mapping were reviewed. All patients had a cardiac implantable device and were followed up for a mean of 755 ± 170 days. RESULTS AF burden significantly decreased from 67.51% ± 34.90% to 18.28% ± 26.65% at 1-year follow-up, and this reduction was maintained at final follow-up (18.26% ± 23.70%, p < 0.001). Continuous monitoring revealed a freedom from AF rate of 33% and 24% at 1-year and full follow-up, respectively. Patients who remained in persistent AF at final follow-up had a trend towards higher pre-ablation AF burden (81.6% ± 29.7% vs 57.3% ± 36.4%, p = 0.08). CONCLUSION Second-generation cryoablation without confirming pulmonary vein isolation using electrical mapping is effective leading to significant reductions in AF burden based on continuous beat-to-beat monitoring at 1-year and long-term follow-up.
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Aryana A, Braegelmann KM, Lim HW, Ellenbogen KA. Cryoballoon ablation dosing: From the bench to the bedside and back. Heart Rhythm 2020; 17:1185-1192. [PMID: 32142876 DOI: 10.1016/j.hrthm.2020.02.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 02/24/2020] [Indexed: 11/16/2022]
Abstract
To date, multiple modes of research have been leveraged to study the optimal cryoballoon ablation parameters to safely, effectively, and efficiently isolate the pulmonary veins for the treatment of atrial fibrillation. Basic scientific investigation, preclinical studies, clinical observations, trials, and, more recently, computational modeling have helped to generate and test new hypotheses for the advancement of cryoballoon treatment in patients with atrial fibrillation. In this review, we examine the data and evidence that have contributed to the development of patient-tailored dosing strategies that are currently used for pulmonary vein isolation by using the Arctic Front series of cryoballoon ablation catheters.
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Affiliation(s)
- Arash Aryana
- Mercy General Hospital and Dignity Health Heart and Vascular Institute, Sacramento, California.
| | | | - Hae W Lim
- Medtronic, Inc, Minneapolis, Minnesota
| | - Kenneth A Ellenbogen
- Division of Clinical Cardiac Electrophysiology and Pacing, Virginia Commonwealth University Health System, Richmond, Virginia
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Maj R, Borio G, Ströker E, Sieira J, Rizzo A, Galli A, Varnavas V, Al Housari M, Sofianos D, Kazawa S, Terasawa M, Bala G, Cecchini F, Iacopino S, Osório TG, Sora N, Brugada P, De Asmundis C, Chierchia GB. Phrenic nerve palsy during right-sided pulmonary veins cryoapplications: new insights from pulmonary vein anatomy addressed by computed tomography. J Interv Card Electrophysiol 2020; 60:85-92. [PMID: 32060817 DOI: 10.1007/s10840-020-00713-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/09/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE There is still sparse information regarding phrenic nerve palsy (PNP) during the cryoablation of both right-sided pulmonary vein (PV) and its anatomical predictors. METHODS Consecutive patients who had undergone pulmonary vein isolation (PVI) using CB-A and suffered PNP during both right-sided PVs were retrospectively included in our study. Two other groups were then selected among patients who experienced PNP during RIPV application only (group 2) and RSPV application only (group 3). RESULTS The incidence of PNI during both right-sided PVs cryoapplications was 2.1%, (32 of 1542 patients). There were no significant clinical differences between the 3 groups. Time from basal temperature to -40 °C significantly differed among the groups for both RIPV (p = 0.0026) and RSPV applications (p = 0.0382). Patients with PNP occurring during RSPV applications had significantly larger RSPV cross-sectional area compared to patients without PNP (p = 0.0116), while in patients with PNP during RIPV application, the angle of RIPV ostium on the transverse plane was significantly smaller compared to patients without PNP (p = 0.0035). The carina width was significantly smaller in patients with PNP occurring during both right-sided PVs cryoapplications compared to patients in which PNP occurred only during one right-sided PV application (p < 0.0001); a cutoff value of 8.5 mm had a sensitivity of 87.3% and a specificity of 75.0%. CONCLUSION PNP in both right-sided PVs applications is a complication that occurred in 2.1% of cases during CB-A. Pre-procedural evaluation of right PVs anatomy might be useful in evaluating the risk of PNP.
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Affiliation(s)
- Riccardo Maj
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium.
| | - Gianluca Borio
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Erwin Ströker
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Juan Sieira
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Alessandro Rizzo
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Alessio Galli
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Varnavas Varnavas
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Maysam Al Housari
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Dimitrios Sofianos
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Shuichiro Kazawa
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Muryo Terasawa
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Gezim Bala
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Federico Cecchini
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Saverio Iacopino
- Electrophysiology Unit, Villa Maria Cecilia, Via Corriera, 1, 48033, Cotignola, RA, Italy
| | | | - Nicoleta Sora
- Thoraxcentrum, Blekingesjukhuset, Karlskrona, Sweden
| | - Pedro Brugada
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Carlo De Asmundis
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
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Suenari K, Nakano T, Tomomori S, Shiode N, Higa S, Chen SA. Cryoballoon Ablation for Patients With Paroxysmal Atrial Fibrillation. Circ Rep 2020; 2:75-82. [PMID: 33693211 PMCID: PMC7929758 DOI: 10.1253/circrep.cr-19-0125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 12/24/2019] [Indexed: 11/09/2022] Open
Abstract
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in clinical practice and induces cardiac dysfunction and stroke. The development of AF requires a trigger and also an electroanatomic substrate capable of both initiating and perpetuating AF. In the past decade, ectopic beats originating from the pulmonary veins (PV) have been identified as a source of paroxysmal AF. Thus, strategies that target the PV, including the PV antrum, are the cornerstone of most AF ablation procedures. Recently, alternative technologies to radiofrequency catheter ablation for paroxysmal AF such as balloon ablation modalities have been developed. The purpose of this review is to discuss cryoballoon ablation for paroxysmal AF.
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Affiliation(s)
- Kazuyoshi Suenari
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital Hiroshima Japan
| | - Takayuki Nakano
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital Hiroshima Japan
| | - Shunsuke Tomomori
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital Hiroshima Japan
| | - Nobuo Shiode
- Department of Cardiology, Hiroshima City Hiroshima Citizens Hospital Hiroshima Japan
| | - Satoshi Higa
- Cardiac Electrophysiology and Pacing Laboratory, Division of Cardiovascular Medicine, Makiminato Central Hospital Okinawa Japan
| | - Shih-Ann Chen
- Division of Cardiology and Cardiovascular Research Center, Taipei Veterans General Hospital Taipei Taiwan
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Maj R, Borio G, Osório TG, Iacopino S, Ströker E, Sieira J, Terasawa M, Rizzo A, Galli A, Varnavas V, Bala GG, Paparella G, Brugada P, De Asmundis C, Chierchia GB. Predictors of cardiac neuromodulation achieved by cryoballoon ablation performed in patients with atrial fibrillation who were in sinus rhythm before the ablation. Int J Cardiol 2020; 310:86-91. [PMID: 32001034 DOI: 10.1016/j.ijcard.2020.01.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 01/04/2020] [Accepted: 01/15/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND The impact of pulmonary vein isolation (PVI) performed with cryoballoon (CB) on the intrinsic cardiac autonomic nervous system (ICANS) remains unclear. OBJECTIVE The purpose of this study was to evaluate the predictors and the clinical meaning of cardiac neuromodulation achieved by CB-ablation as assessed by sinus heart rate (HR) response after the procedure. METHODS Patients who underwent CB-ablation for drug-resistant atrial fibrillation (AF) from January 2014 to October 2018 were included. Twelve‑leads rest ECG was taken both before and after the procedure. After discharge, patients were scheduled for follow-up visits at 1, 3, 6, and 12 months and 24 h Holter recordings were obtained at each follow-up visit. All documented AF episodes of >30 s were considered as recurrence. RESULTS Four-hundred seventy-two patients (62.3% male, age 56.7 ± 13.6 years, 97.2% paroxysmal AF) were included. Mean HR before the procedure was 60.17 ± 10.4 bpm, while the morning after the procedure mean HR was 75.48 ± 12.0 bpm. Age at enrollment (R = -0.26; p < 0.001), baseline HR before the CB-A (R = -0.32; p < 0.001), nadir temperature in each right pulmonary vein (R = -0.11, p = 0.022; R = -0.16; p = 0.001) were significantly associated with the ∆HR. At 2-year follow-up, freedom from recurrences was 83.1% for the patients with HR increase ≥15 bpm after CB-A and 66.3% in patients with HR increase ˂15 bpm (p = 0.021). CONCLUSION Sinus HR increase is a frequent phenomenon after CB-A, that can be predicted by both clinical and procedural factors and that correlates with better outcome after cryo-PVI.
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Affiliation(s)
- Riccardo Maj
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium.
| | - Gianluca Borio
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | | | - Saverio Iacopino
- Electrophysiology Unit, Villa Maria Cecilia, Via Corriera, 1, 48033 Cotignola, RA, Italy
| | - Erwin Ströker
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Juan Sieira
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Muryo Terasawa
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Alessandro Rizzo
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Alessio Galli
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Varnavas Varnavas
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Gazim Gezim Bala
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Gaetano Paparella
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Pedro Brugada
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
| | - Carlo De Asmundis
- Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090, Brussels, Belgium
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Borio G, Maj R, Alessandro R, Stroker E, Sieira J, Osorio TG, Galli A, Terasawa M, Bala G, Al Housari M, Paparella G, Iacopino S, Overeinder I, Brugada P, de Asmundis C, Chierchia GB. Pulmonary veins anatomical determinants of cooling kinetics during second-generation cryoballoon ablation. J Cardiovasc Electrophysiol 2020; 31:629-637. [PMID: 31943519 DOI: 10.1111/jce.14356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/10/2019] [Accepted: 12/15/2019] [Indexed: 11/29/2022]
Abstract
AIM The aim of the study was to investigate the role of anatomical characteristics of the pulmonary veins (PVs) determining cooling kinetics during second-generation cryoballoon ablation (CbA). METHODS AND RESULTS we enrolled all consecutive patients who underwent CbA for symptomatic atrial fibrillation in our center from January 2019 to March 2019. All patients had complete computed tomography scans of the heart before the ablation. Anatomical characteristics were tested for prediction of a nadir temperature (NT) ≤ -48°C. Significant differences were noted among PV max diameter (20.8 ± 2.8 vs 18.5 ± 2.5 mm; P < .001); PV minimum diameter (15.2 ± 3.0 vs 13.0 ± 3.1 mm; P < .001); PV area (268.1 ± 71.9 vs 206.2 ± 58.7 mm2 ; P < .001); PV ovality (1.4 ± 0.3 vs 1.5 ± 0.3; P = .005); and PV trunk length (27.4 ± 7.4 vs 21.3 ± 6.5 mm; P < .001). A scoring system was created by assigning one point each ranging from 0 (best anatomical combination) to 5. In the group with a score of 0, 94.0% of the CbA could reach a NT ≤ -48°C whereas with a score of 5, only 29.0% (P < .001). Left superior pulmonary vein with short trunk length and acute angle of PV branch was significantly associated with warmer NT (11.8% satisfactory CbA; P = .003). Regarding right inferior pulmonary vein, trunk length (P = .004), maximum diameter (P = .044), and transverse angle (P = .008) were independently associated with good NT. CONCLUSION Anatomical PV features are associated with cooling kinetics and an anatomical score could predict lower NT during second-generation CbA. Specific characteristics were identified for inferior PV. Although heart imaging is not mandatory prior CbA, it can be a useful tool to predict cooling kinetics.
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Affiliation(s)
- Gianluca Borio
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Riccardo Maj
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Rizzo Alessandro
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Erwin Stroker
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Juan Sieira
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Thiago G Osorio
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Alessio Galli
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Muryo Terasawa
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Gezim Bala
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Maysam Al Housari
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Gaetano Paparella
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Saverio Iacopino
- Electrophysiology Unit, Gruppo Villa Maria, Villa Maria Cecilia Hospital, Cotignola, Italy
| | - Ingrid Overeinder
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Pedro Brugada
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Carlo de Asmundis
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Gian B Chierchia
- Heart Rhythm Management Centre, Postgraduate Course in Cardiac Electrophysiology and Pacing, Vrije Universiteit Brussel, Universitair Ziekenhuis Brussel, Brussels, Belgium
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Zhang CF, Wu JL, You L, Yang Y, Ma BF, Xie RQ. Thawing Rate Predicts Acute Pulmonary Vein Isolation after Second-Generation Cryoballoon Ablation. Clinics (Sao Paulo) 2020; 75:e1672. [PMID: 32667496 PMCID: PMC7337220 DOI: 10.6061/clinics/2020/e1672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 03/24/2020] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To evaluate whether thawing rate could be a novel predictor of acute pulmonary vein isolation (PVI) and explore the predictive value of thawing rate as a factor ensuring long-term PVI (vagus reflex). METHODS A total of 151 patients who underwent cryoballoon ablation for atrial fibrillation (AF) were enrolled in this retrospective study between January 2017 and June 2018. The thawing rate was calculated using the thawing phase of the cryoablation curve. Receiver operating characteristic (ROC) curve was used to analyze the predictive value of the thawing rate for acute PVI and vagus reflex. RESULTS ROC curve analyses revealed that the interval thawing rate at 15°C (ITR15) was the most valuable predictor of PVI, with the highest area under curve (AUC) value of the ROC curve. The best cut-off value of ITR15 for PVI was ≤2.14°C/S and its sensitivity and specificity were 88.62% and 67.18%, respectively. In addition, the ITR15 of the successful PVI group after cryoballoon ablation was significantly slower than the failed PVI group. ITR15 was a predictor of vagus reflex and the occurrence of vagus reflex group had a slower ITR15 compared to the non-occurrence group. CONCLUSIONS Thawing rate was a novel predictor of acute PVI and the ITR15 was the most valuable predictor of acute PVI. In addition, ITR15 was a predictive factor ensuring long-term PVI (vagus reflex). Our study showed that thawing rate may serve in the early identification of useless cryoballoon ablation.
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Affiliation(s)
- Chen-Feng Zhang
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jing-Lan Wu
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ling You
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ying Yang
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Bo-Fei Ma
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Rui-Qin Xie
- Department of Cardiovascular Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- *Corresponding author. E-mail:
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50
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Chikata A, Kato T, Usuda K, Fujita S, Takaoka M, Tsuda T, Hayashi K, Furusho H, Takamura M. Optimization of the hot balloon ablation strategy using real‐time pulmonary vein potential monitoring. J Cardiovasc Electrophysiol 2019; 31:163-173. [DOI: 10.1111/jce.14313] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Akio Chikata
- Division of Cardiology, Department of Internal MedicineToyama Prefectural Central Hospital Toyama Japan
- Department of Cardiovascular MedicineKanazawa University Graduate School of Medical Science Kanazawa Japan
| | - Takeshi Kato
- Department of Cardiovascular MedicineKanazawa University Graduate School of Medical Science Kanazawa Japan
| | - Kazuo Usuda
- Division of Cardiology, Department of Internal MedicineToyama Prefectural Central Hospital Toyama Japan
| | - Shuhei Fujita
- Department of PediatricsToyama Prefectural Central Hospital Toyama Japan
| | - Motoki Takaoka
- Product Development Group, Hot Balloon Catheter Business DepartmentToray Industries, Inc Tokyo Japan
| | - Toyonobu Tsuda
- Department of Cardiovascular MedicineKanazawa University Graduate School of Medical Science Kanazawa Japan
| | - Kenshi Hayashi
- Department of Cardiovascular MedicineKanazawa University Graduate School of Medical Science Kanazawa Japan
| | - Hiroshi Furusho
- Department of Cardiovascular MedicineKanazawa University Graduate School of Medical Science Kanazawa Japan
| | - Masayuki Takamura
- Department of Cardiovascular MedicineKanazawa University Graduate School of Medical Science Kanazawa Japan
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