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Effectiveness and Safety of High-Power Radiofrequency Ablation Guided by Ablation Index for the Treatment of Atrial Fibrillation. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:5609764. [PMID: 35991126 PMCID: PMC9391153 DOI: 10.1155/2022/5609764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/09/2022] [Accepted: 07/21/2022] [Indexed: 11/25/2022]
Abstract
Background To investigate the efficacy and safety of ablation index- (AI-) guided high-power radiofrequency ablation in the treatment of atrial fibrillation (AF). Methods Outcomes of radiofrequency (RF) applications were compared in a swine ventricular endocardial model (n = 10 each for 50 W, 40 W, and 30 W; AI = 500). And a total of 100 consecutive patients with paroxysmal AF undergoing pulmonary vein isolation (PVI) were included. The patients were divided into two groups (n = 50 for each) as follows: control group, treated with conventional power (30 W) ablation mode; and study group, treated with high power (40 W) radiofrequency ablation mode. All groups were treated with the same AI value guided the ablation (target AI = 400/500 on posterior/anterior wall, respectively). Acute pulmonary vein (PV) reconnection was assessed post adenosine administration 20 minutes after ablation. Subsequently, pathological observation of porcine heart lesions and necrotic tissue was performed. Additionally, statistical analyses were carried out on patients' baseline clinical characteristics, surgical data, and total RF energy. Results In swine ventricular endocardial RF applications, compared with 40 W and 30 W, the use of 50 W was associated with shallower tissue lesion depth (p < 0.001) and greater lesion maximum diameter (p < 0.001). Compared with 40 W and 30 W, tissue necrosis caused by 50 W was the deepest and largest (p < 0.001). In pulmonary vein isolation (PVI), there was no significant difference in baseline data between the study group and control group (p > 0.05). In patients with paroxysmal atrial fibrillation, the procedure time in the high-power group was significantly shortened (p < 0.001). The ablation time was significantly shorter (p < 0.001). Compared with control group, RF energy per point and acute pulmonary vein (PV) reconnection were lower (p < 0.001), and first-pass PVI was higher (p < 0.01) in study group. There were no significant differences in complications and sinus rhythm maintenance at 12 months between the two groups (p > 0.05). Conclusions Compared with conventional (30 W) PVI, AI-guided high-power (40 W) was safe and associated with shorter procedure time and reduced acute PV reconnection.
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Aldhoon B, Peichl P, Osmančík P, Konečný P, Kautzner J, Wichterle D. Acute efficacy of contiguous versus temporally discontiguous point-by-point radiofrequency pulmonary vein isolation in patients with paroxysmal atrial fibrillation: a randomized study. J Interv Card Electrophysiol 2022; 64:661-667. [PMID: 34988847 DOI: 10.1007/s10840-021-01113-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/27/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Durable pulmonary vein (PV) isolation (PVI) determines the clinical success of catheter ablation for atrial fibrillation. In this randomized study, we investigated whether the temporally discontiguous deployment of ablation lesions adversely affected the acute efficacy of PVI. METHODS Thirty-six consecutive patients with drug-refractory paroxysmal atrial fibrillation (aged 59 ± 11, 58% males) were randomized 1:1 to either discontiguous (D-PVI) or contiguous (C-PVI) encircling radiofrequency (RF) lesions around ipsilateral PVs. A contact force-sensing catheter was used targeting a final interlesion distance < 6 mm and the ablation index of 400-450 (anterior wall) and 300-350 (posterior wall). The study endpoint was defined as failure of first-pass PVI or acute PV reconnection during a waiting time (> 30 min) followed by adenosine challenge. RESULTS The total RF time, number of RF lesions, and mean interlesion distance were comparable in both groups. Total endpoint rates were 1/36 (3%) in the D-PVI vs 4/36 (11%) in the C-PVI groups; P = 0.34 for superiority, P = 0.008 for non-inferiority. Adenosine-induced reconnection of right PVs was the only endpoint in the D-PVI group. In the C-PVI group, first-pass PVI failed in 2 right PVs and spontaneous reconnection occurred in 2 other circles (left and right PVs). CONCLUSION Temporally discontiguous deployment of RF lesions is not associated with lower procedural PVI efficacy when strict criteria for interlesion distance and ablation index are applied. The development of local edema around each ablation site does not prevent effective RF lesion formation at adjacent positions. TRIAL REGISTRATION clinicaltrials.gov (NCT03332862).
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Affiliation(s)
- Bashar Aldhoon
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petr Peichl
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Pavel Osmančík
- University Hospital Kralovske Vinohrady, Prague, Czech Republic.,Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Petr Konečný
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Josef Kautzner
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Dan Wichterle
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic.,First Faculty of Medicine, Charles University, Prague, Czech Republic
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Stabile G, Schillaci V, Strisciuglio T, Arestia A, Agresta A, Shopova G, De Simone A, Solimene F. In vivo biophysical characterization of very high power, short duration, temperature-controlled lesions. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 44:1717-1723. [PMID: 34498748 DOI: 10.1111/pace.14358] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/30/2021] [Accepted: 09/05/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION A very high-power short-duration (vHPSD) strategy of radiofrequency (RF) ablation aims to minimize conductive heating and increase resistive heating. This study aimed to clarify the contribution of contact force (CF) and temperature and their interrelationship in making an adequate lesion with the vHPSD catheter. METHODS We enrolled 46 consecutive patients undergoing first catheter ablation for atrial fibrillation (AF). The vHPSD ablation was performed applying 90 W, for 4 s, with an irrigation of 8 ml/min. During an application, an impedance drop (ID) ≥10 Ω was regarded as an adequate lesion formation. RESULTS The mean procedural time was 95 ± 15 min. First-pass isolation was reached in 89% of patients and at the end of the procedure all pulmonary veins were isolated. No steam pop nor procedural complication occurred. A total of 3829 qualified RF points were analyzed and the median values of ID, CF and maximum temperature were respectively 10.6 (IQR 8.6-13.1) Ohm, 9 (5.8-13.8) g, 46.8 (44.1-49.8) °C. The mean ID significantly increased in parallel with the increasing CF as well as with the increasing maximum temperature. In the multivariable analysis only the CF and the maximum temperature were independent predictors of ID. From receiver operating characteristic curve analysis, a CF of 8 g and a maximum temperature of 47°C are the optimal cutoff discriminatory value for adequate lesion formation. CONCLUSIONS The vHPSD ablation is highly effective and safe. The CF and the maximum temperature are independent predictors of adequate lesion formation assessed by means of ID.
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Affiliation(s)
- Giuseppe Stabile
- Clinica Montevergine, Mercogliano, Avellino, Italy.,Clinica San Michele, Maddaloni, Caserta, Italy.,Anthea Hospital, Bari, Italy
| | | | - Teresa Strisciuglio
- Clinica Montevergine, Mercogliano, Avellino, Italy.,Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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Abstract
This article reviews and compares the rationale and evidence supporting high-power, short-duration radiofrequency (RF) ablation with those of conventional-power, conventional-duration RF ablation for atrial fibrillation (AF). The pros and cons of each approach, biophysics of ablation, pre-clinical studies informing clinical utilization, and the accumulated clinical evidence are presented. Both conventional-power, conventional-duration RF ablation and high-power, short-duration ablation are similarly safe, and effective approaches for AF ablation. Theoretical advantages of high-power, short-duration ablation, including greater procedure efficiency and limited conductive heating of collateral structures, must be weighed against the narrower safety margin related to rapid energy delivery during high power ablation.
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Zucchelli G, Parollo M, Guarracini F, Marini M, Di Cori A, Barletta V, De Lucia R, Segreti L, Bonmassari R, Bongiorni MG. Standard versus strict stability criteria in radiofrequency paroxysmal atrial fibrillation ablation using ablation index. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 44:1404-1412. [PMID: 34224159 DOI: 10.1111/pace.14309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/24/2021] [Accepted: 06/27/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE To compare the outcome of paroxysmal atrial fibrillation (AF) ablation via pulmonary vein isolation using Ablation Index (AI) with strict or standard stability criteria. METHODS We enrolled 130 consecutive naive patients affected by paroxysmal AF who underwent PVI at two high-volume centers. AI target was ≥380 at the posterior wall and ≥500 at the anterior wall. Strict versus standard stability criteria were set for Group 1 (65 patients) and Group 2 (65 patients), respectively. We compared those strategies with a historical cohort of 72 consecutive patients treated at same centers in the VISITALY study, using average force ≥10 g and strict stability criteria as target parameters. Interlesion distance target was <6 mm. Recurrence was defined as any AF, atrial tachycardia (AT) or atrial flutter (AFL) during the 12 months after ablation, excluding a 90-days blanking period. RESULTS Procedure duration (224.05 ± 47.21 vs. 175.61 ± 51.29 min; p < .001), fluoroscopy time (11.85 ± 4.38 vs. 10.46 ± 6.49 min; p = .019) and pericardial effusion rate (9.23% vs. 0%; p = .01) were higher in Group 1 than in Group 2. Freedom from AF/AT/AFL at 12 months was not significantly different (Group 1: 86.15%; Group 2: 90.77%; p = .42). Compared to VISITALY study, there were not significant differences in terms of recurrences. CONCLUSION A strategy of PVI using AI with standard stability criteria performed the best in terms of procedure efficiency and safety. Twelve-months arrhythmia-free survival rate was comparable with other strategies pursuing an interlesion distance target <6 mm, regardless of the use of AI.
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Affiliation(s)
- Giulio Zucchelli
- Second Division of Cardiology, Pisa University Hospital, Pisa, Italy
| | - Matteo Parollo
- Second Division of Cardiology, Pisa University Hospital, Pisa, Italy
| | | | | | - Andrea Di Cori
- Second Division of Cardiology, Pisa University Hospital, Pisa, Italy
| | | | - Raffaele De Lucia
- Second Division of Cardiology, Pisa University Hospital, Pisa, Italy
| | - Luca Segreti
- Second Division of Cardiology, Pisa University Hospital, Pisa, Italy
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Osorio J, Hunter TD, Rajendra A, Zei P, Silverstein J, Morales G. Predictors of clinical success after paroxysmal atrial fibrillation catheter ablation. J Cardiovasc Electrophysiol 2021; 32:1814-1821. [PMID: 33825242 DOI: 10.1111/jce.15028] [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] [Received: 10/21/2020] [Revised: 03/05/2021] [Accepted: 03/21/2021] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Contact force (CF) guided ablation of paroxysmal atrial fibrillation (PAF) with stable catheter-tissue contact optimizes clinical success and may increase an operator's ability to achieve pulmonary vein isolation (PVI) in a single encirclement. First pass PVI reduces procedure time but the relationship with long term clinical success is not well understood. This study evaluated patient characteristics and procedural details as predictors of 1-year clinical success after PAF ablation, including first pass isolation. METHODS Consecutive de novo PAF ablations were performed with a porous tip CF catheter in 2017 and 2018. All ablations used wide-area circumferential ablation, with first pass isolation captured separately for the left and right pulmonary veins (PVs). CF was held between 10 and 20 g and the catheter was moved every 10-20 s. Radiofrequency energy was set at 40-45 W throughout the atrium. Patient characteristics and procedural details were tested for association with clinical success, defined as freedom from recurrent atrial tachyarrhythmia through 1 year. RESULTS A total of 404 patients were included in the study. Clinical success at 1 year was 86.6%. Achieving first pass isolation on at least one ipsilateral PV pair was the most significant predictor of clinical success (p = .0126). After controlling for first pass isolation, only recurrence within the 90-day blanking period was independently predictive (p = .0015). First pass isolation was not associated with early recurrence (p = .2454). CONCLUSION In a real-world setting, first pass isolation was highly predictive of 12-month clinical success after CF-guided ablation in a PAF population.
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Affiliation(s)
- Jose Osorio
- Arrhythmia Institute at Grandview, Birmingham, Alabama, USA
| | - Tina D Hunter
- CTI Clinical Trial & Consulting Services, Covington, Kentucky, USA
| | - Anil Rajendra
- Arrhythmia Institute at Grandview, Birmingham, Alabama, USA
| | - Paul Zei
- Brigham And Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Kewcharoen J, Techorueangwiwat C, Kanitsoraphan C, Leesutipornchai T, Akoum N, Bunch T, Navaravong L. High‐power short duration and low‐power long duration in atrial fibrillation ablation: A meta‐analysis. J Cardiovasc Electrophysiol 2020; 32:71-82. [DOI: 10.1111/jce.14806] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/08/2020] [Accepted: 10/26/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Jakrin Kewcharoen
- Department of Medicine, University of Hawaii Internal Medicine Residency Program Honolulu Hawaii USA
| | - Chol Techorueangwiwat
- Department of Medicine, University of Hawaii Internal Medicine Residency Program Honolulu Hawaii USA
| | - Chanavuth Kanitsoraphan
- Department of Medicine, University of Hawaii Internal Medicine Residency Program Honolulu Hawaii USA
| | | | - Nazem Akoum
- Division of Cardiology University of Washington School of Medicine Seattle Washington USA
| | - Thomas J. Bunch
- Division of Cardiovascular Medicine University of Utah School of Medicine Salt Lake City Utah USA
| | - Leenhapong Navaravong
- Division of Cardiovascular Medicine University of Utah School of Medicine Salt Lake City Utah USA
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Kim YG, Shim J, Boo KY, Kim DY, Lee KN, Choi JI, Kim YH. Slit-based irrigation catheters can reduce procedure-related ischemic stroke in atrial fibrillation patients undergoing radiofrequency catheter ablation. PLoS One 2020; 15:e0239339. [PMID: 33002011 PMCID: PMC7529237 DOI: 10.1371/journal.pone.0239339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 09/04/2020] [Indexed: 11/18/2022] Open
Abstract
Open irrigation ablation catheters are now the standard in radiofrequency catheter ablation (RFCA) of atrial fibrillation (AF). Among various irrigation catheters, laser-cut slit-based irrigation system (Cool Flex and FlexAbility) has a unique design to cool the catheter tip more efficiently. We aimed to assess the safety of slit-based irrigation catheters regarding prevention of procedure-related ischemic complication in AF patients undergoing RFCA. The analysis was performed with Korea University Medicine Anam Hospital RFCA registry. Procedure-related ischemic complication was defined as ischemic stroke or transient ischemic attack (TIA) occurring within 30 days after RFCA. Patients were divided into 3 groups: non-irrigation, hole-based irrigation, and slit-based irrigation catheter groups. A total of 3,120 AF patients underwent first RFCA. Non-irrigation, non-slit-based irrigation, and slit-based irrigation catheters were used in 290, 1,539, and 1,291 patients, respectively. As compared with non-irrigation and non-slit-based irrigation catheter groups, slit-based irrigation catheter group had significantly older age, higher prevalence of non-paroxysmal AF, large left atrial size, and decreased left atrial appendage flow velocity. The CHA2DS2-VASc score was not different among the 3 groups. Procedure-related ischemic complication occurred in 17 patients (0.54%) with 16 ischemic strokes and 1 TIA event: 5/290 (1.72%), 11/1,539 (0.71%), and 1/1,291 (0.08%) events in non-irrigation, non-slit-based irrigation, and slit-based irrigation catheter groups, respectively (p = 0.001). Slit-based irrigation catheter was superior in direct comparison with non-slit-based irrigation catheter (0.71% vs. 0.08%; p = 0.009). Slit-based irrigation catheters were highly effective in preventing procedure-related ischemic complications.
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Affiliation(s)
- Yun Gi Kim
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
| | - Jaemin Shim
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
- * E-mail:
| | - Ki Yung Boo
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
| | - Do Young Kim
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
| | - Kwang-No Lee
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
| | - Jong-Il Choi
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
| | - Young-Hoon Kim
- Arrhythmia Center, Korea University Medicine, Seoul, Republic of Korea
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Role of pre-procedural CT imaging on catheter ablation in patients with atrial fibrillation: procedural outcomes and radiological exposure. J Interv Card Electrophysiol 2020; 60:477-484. [PMID: 32405889 DOI: 10.1007/s10840-020-00764-4] [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: 03/22/2020] [Accepted: 04/23/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Cardiac computed tomography (CT) is commonly used to study left atrial (LA) and pulmonary veins (PVs) anatomy before atrial fibrillation (AF) ablation. The aim of the study was to determine the impact of pre-procedural cardiac CT with 3D reconstruction on procedural outcomes and radiological exposure in patients who underwent radiofrequency catheter ablation (RFA) of AF. METHODS In this registry, 493 consecutive patients (age 62 ± 8 years, 70% male) with paroxysmal (316) or persistent (177) AF who underwent first procedure of RFA were included. A pre-procedural CT scan was obtained in 324 patients (CT group). Antral pulmonary vein isolation was performed in all patients using an open-irrigation-tip catheter with a 3D electroanatomical navigation system. Procedural outcome, including radiological exposure, and clinical outcomes were compared among patients who underwent RFA with (CT group) and without (no CT group) pre-procedural cardiac CT. RESULTS Acute PV isolation was obtained in all patients, with a comparable overall complication rate between CT and no CT group (4.3% vs 3%, p = 0.7). No differences were observed about mean duration of the procedure (231 ± 60 vs 233 ± 58 min, p = 0.7) and fluoroscopy time (13 ± 10 vs 13 ± 8 min, p = 0.6) among groups. Cumulative radiation dose resulted significantly higher in the CT group compared with no CT group (8.9 ± 24 vs 4.8 ± 15 mSv, P = 0.02). At 1 year, freedom from AF/atrial tachycardia were comparable among groups (CT group, 227/324 (70%), vs no CT group,119/169 (70%), p = ns). CONCLUSIONS Pre-procedural CT does not improve safety and efficacy of AF ablation, increasing significantly the cumulative radiological exposure.
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Stabile G, Lepillier A, De Ruvo E, Scaglione M, Anselmino M, Sebag F, Pecora D, Gallagher M, Rillo M, Viola G, Rossi L, De Santis V, Landolina M, Castro A, Grimaldi M, Badenco N, Del Greco M, De Simone A, Pisanò E, Abbey S, Lamberti F, Pani A, Zucchelli G, Sgarito G, Dugo D, Bertaglia E, Strisciuglio T, Solimene F. Reproducibility of pulmonary vein isolation guided by the ablation index: 1-year outcome of the AIR registry. J Cardiovasc Electrophysiol 2020; 31:1694-1701. [PMID: 32369225 DOI: 10.1111/jce.14531] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Ablation index (AI) is a new lesion quality marker that has been demonstrated to allow a high single-procedure arrhythmia-free survival in single-center studies. This prospective, multi-center study was designed to evaluate the reproducibility of pulmonary vein (PV) isolation guided by the AI. METHODS A total of 490 consecutive patients with paroxysmal (80.4%) and persistent AF underwent first time PV isolation and were divided in four study groups according to operator's preference in choosing the ablation catheter (a contact force (ST) or contact force surround flow (STSF) catheter) and the AI setting (330-450 or 380-500 at anterior wall or posterior wall, respectively). RESULTS At 12 months a high rate of freedom from AF recurrences was observed in patients with both paroxysmal and persistent AF (91% vs 83.3%; P = .039). There was no difference in the rate of AF recurrence among the four study groups (4.5% in group ST330-450, 12.2% in group ST 380-500, 14.9% in group STSF330-450, 9.4% in group STSF380-500; P = .083). Recurrence was also similar between patients treated with a ST (8%) or STSF catheter (12.1%; P = .2), and within patients targeting an AI settings of 330 to 450 (10.9%) or 380 to 500 (10.3%; P = .64). In patients with paroxysmal AF, there was no difference (P = .12) in the 1-year freedom from AF recurrence among 14 operators that performed ≥10 ablation procedure. CONCLUSIONS An ablation protocol respecting strict criteria for contiguity and quality lesion resulted in high rate of 1-year freedom from AF recurrence, irrespective of the ablation catheters, AI settings, and operator.
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Affiliation(s)
- Giuseppe Stabile
- Clinica Montevergine, Mercogliano, Avellino, Italy.,Clinica San Michele, Maddaloni, Caserta, Italy.,Anthea Hospital, Bari, Italy
| | | | | | | | - Matteo Anselmino
- Department of Medical Sciences, A. O. U. Citta della Salute e della Scienza di Torino, University of Turin, Italy
| | | | | | | | | | | | - Luca Rossi
- Ospedale Civili Guglielmo da Saliceto, Piacenza, Italy
| | | | | | | | - Massimo Grimaldi
- Ospedale Regionale Miulli, Acquaviva delle Fonti, Metropolitan City of Bari, Italy
| | | | | | | | | | - Salim Abbey
- Hôpital Privé Du Confluent (HPCN), Nantes, France
| | | | | | | | | | - Daniela Dugo
- AUO Policlinico Vittorio Emanuele, Catania, Italy
| | - Emanuele Bertaglia
- Department of Cardiac, Thoracic, and Vascular Sciences, University of Padova, Padua, Italy
| | - Teresa Strisciuglio
- Clinica Montevergine, Mercogliano, Avellino, Italy.,Department of Advanced Biomedical Sciences, University of Naples Federico II, Naples, Italy
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Kim Y, Chen S, Ernst S, Guzman CE, Han S, Kalarus Z, Labadet C, Lin Y, Lo L, Nogami A, Saad EB, Sapp J, Sticherling C, Tilz R, Tung R, Kim YG, Stiles MK. 2019 APHRS expert consensus statement on three-dimensional mapping systems for tachycardia developed in collaboration with HRS, EHRA, and LAHRS. J Arrhythm 2020; 36:215-270. [PMID: 32256872 PMCID: PMC7132207 DOI: 10.1002/joa3.12308] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 01/20/2020] [Indexed: 12/24/2022] Open
Affiliation(s)
- Young‐Hoon Kim
- Department of Internal MedicineArrhythmia CenterKorea University Medicine Anam HospitalSeoulRepublic of Korea
| | - Shih‐Ann Chen
- Division of CardiologyDepartment of MedicineTaipei Veterans General HospitalTaipeiROC
| | - Sabine Ernst
- Department of CardiologyRoyal Brompton and Harefield HospitalImperial College LondonLondonUK
| | | | - Seongwook Han
- Division of CardiologyDepartment of Internal MedicineKeimyung University School of MedicineDaeguRepublic of Korea
| | - Zbigniew Kalarus
- Department of CardiologyMedical University of SilesiaKatowicePoland
| | - Carlos Labadet
- Cardiology DepartmentArrhythmias and Electrophysiology ServiceClinica y Maternidad Suizo ArgentinaBuenos AiresArgentina
| | - Yenn‐Jian Lin
- Division of CardiologyDepartment of MedicineTaipei Veterans General HospitalTaipeiROC
| | - Li‐Wei Lo
- Division of CardiologyDepartment of MedicineTaipei Veterans General HospitalTaipeiROC
| | - Akihiko Nogami
- Department of CardiologyFaculty of MedicineUniversity of TsukubaTsukubaJapan
| | - Eduardo B. Saad
- Center for Atrial FibrillationHospital Pro‐CardiacoRio de JaneiroBrazil
| | - John Sapp
- Division of CardiologyDepartment of MedicineQEII Health Sciences CentreDalhousie UniversityHalifaxNSCanada
| | | | - Roland Tilz
- Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine)University Hospital Schleswig‐Holstein (UKSH) – Campus LuebeckLuebeckGermany
| | - Roderick Tung
- Center for Arrhythmia CarePritzker School of MedicineUniversity of Chicago MedicineChicagoILUSA
| | - Yun Gi Kim
- Department of Internal MedicineArrhythmia CenterKorea University Medicine Anam HospitalSeoulRepublic of Korea
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12
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De Potter T, Hunter TD, Boo LM, Chatzikyriakou S, Strisciuglio T, Silva E, Geelen P. The industrialization of ablation: a highly standardized and reproducible workflow for radiofrequency ablation of atrial fibrillation. J Interv Card Electrophysiol 2019; 59:21-27. [PMID: 31625008 PMCID: PMC7508733 DOI: 10.1007/s10840-019-00622-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 09/06/2019] [Indexed: 10/29/2022]
Abstract
BACKGROUND OR PURPOSE The purpose of this analysis was to report on efficacy of a standardized workflow for atrial fibrillation (AF) ablation using technology advances such as 3D imaging and contact force sensing in a real-world setting. METHODS Consecutive AF ablations from 2014 to 2015 at a high-volume site in Belgium were included. The workflow consisted of a pre-specified procedure sequence including 3D modeling followed by radiofrequency encircling of the pulmonary veins (25 W posterior wall, 35 W anterior wall) with a THERMOCOOL SMARTTOUCH® Catheter guided by CARTO VISITAG™ Module (2.5 mm/5 s stability, 50% > 7 g) and ablation index (targets: 550 anterior wall, 400 posterior wall). Efficiency endpoints were procedure time, fluoroscopy time, and radiation dose. The primary effectiveness endpoint was freedom from atrial arrhythmia recurrence. RESULTS A total of 605 paroxysmal AF (PAF) and 182 persistent AF (PsAF) patients were followed for 436 ± 199 days. Mean procedure times were short (PAF: 96.1 ± 26.2 min; PsAF: 109.2 ± 35.6 min) with most procedures (90.6% PAF; 81.3% PsAF) completed in ≤ 120 min. Minimal fluoroscopy was utilized (PAF: 6.1 ± 3.8 min, 5.9 ± 3.4 Gy*cm2; PsAF: 6.9 ± 4.7 min, 7.4 ± 4.9 Gy*cm2). Freedom from atrial arrhythmia recurrence was higher for PAF than PsAF patients (OR: 2.0, 95% CI: 1.4-2.9, p = 0.0003), but adjusted mean rates were high in both groups (81.0% vs. 67.9%). Rates were adjusted for prior ablation and age (at 65 years). CONCLUSION AF ablation using a standardized workflow resulted in low procedure times and variability, with minimal fluoroscopy exposure. Long-term freedom from atrial arrhythmia recurrence was high in both PAF and PsAF populations.
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Affiliation(s)
- Tom De Potter
- Cardiovascular Center, OLV Hospital, Moorselbaan 169, 9300, Aalst, Belgium.
| | - Tina D Hunter
- CTI Clinical Trial and Consulting Services, Covington, KY, USA
| | | | - Sofia Chatzikyriakou
- Cardiovascular Center, OLV Hospital, Moorselbaan 169, 9300, Aalst, Belgium.,Cardiology Department, CUB-Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Teresa Strisciuglio
- Cardiovascular Center, OLV Hospital, Moorselbaan 169, 9300, Aalst, Belgium.,University of Naples Federico II, Naples, Italy
| | - Etel Silva
- Cardiovascular Center, OLV Hospital, Moorselbaan 169, 9300, Aalst, Belgium
| | - Peter Geelen
- Cardiovascular Center, OLV Hospital, Moorselbaan 169, 9300, Aalst, Belgium
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Yanagisawa S, Inden Y, Okamoto H, Fujii A, Sakamoto Y, Mamiya K, Tomomatsu T, Shibata R, Murohara T. Electrocardiogram characteristics of P wave associated with successful pulmonary vein isolation in patients with paroxysmal atrial fibrillation: Significance of changes in P-wave duration and notched P wave. Ann Noninvasive Electrocardiol 2019; 25:e12712. [PMID: 31566884 PMCID: PMC7358886 DOI: 10.1111/anec.12712] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 08/22/2019] [Accepted: 09/05/2019] [Indexed: 11/29/2022] Open
Abstract
Background The mechanisms involved in changes in P wave following catheter ablation for atrial fibrillation (AF) are uncertain. This study aimed to assess the relationship between changes in P‐wave morphology and pulmonary vein (PV) reconnection following ablation by the assessment of 12‐lead surface electrocardiogram and signal‐averaged electrocardiogram. Methods This retrospective study included 115 consecutive patients with paroxysmal AF that underwent repeat ablation for recurrence following initial ablation. We investigated changes in P‐wave morphology between baseline and repeat procedure in patients with and without PV reconnection. The study also included as validation group without recurrence (n = 67) following initial ablation. Results The maximum P‐wave duration (PWD) was significantly decreased from baseline to just after the procedure in all groups. However, for the PV reconnection group (n = 100), the maximum PWD was significantly increased again at the repeat procedure. In contrast, the maximum PWD was significantly reduced between baseline and repeat procedure in the non‐PV reconnection group (n = 15). The signal‐averaged PWD was significantly decreased from baseline to repeat procedure in the non‐PV reconnection group, but, conversely, was increased in the PV reconnection group. In the non‐PV reconnection group, the disappearance of notched P wave was detected in 8 of 15 patients (53%), which was significantly higher than in other groups (p = .001). A new or delayed notched P wave was identified in the PV reconnection group only. These results were confirmed in the validation group. Conclusions The reverse dynamics of PWD after initial shortening directly following ablation were significantly associated with PV reconnection.
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Affiliation(s)
- Satoshi Yanagisawa
- Department of Advanced Cardiovascular Therapeutics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroya Okamoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Aya Fujii
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yusuke Sakamoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Keita Mamiya
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toshiro Tomomatsu
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Rei Shibata
- Department of Advanced Cardiovascular Therapeutics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Berte B, Hilfiker G, Moccetti F, Schefer T, Weberndörfer V, Cuculi F, Toggweiler S, Ruschitzka F, Kobza R. Pulmonary vein isolation using ablation index vs. CLOSE protocol with a surround flow ablation catheter. Europace 2019; 22:84-89. [DOI: 10.1093/europace/euz244] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 08/29/2019] [Indexed: 11/12/2022] Open
Abstract
AbstractAimsPulmonary vein isolation (PVI) using ablation index (AI) incorporates stability, contact force (CF), time, and power. The CLOSE protocol combines AI and ≤6 mm interlesion distance. Safety concerns are raised about surround flow ablation catheters (STSF). To compare safety and effectiveness of an atrial fibrillation (AF) ablation strategy using AI vs. CLOSE protocol using STSF.Methods and resultsFirst cluster was treated using AI and second cluster using CLOSE. Procedural data, safety, and recurrence of any atrial tachycardia (AT) or AF >30 s were collected prospectively. All Classes 1c and III anti-arrhythmic drugs (AAD) were stopped after the blanking period. In total, all 215 consecutive patients [AI: 121 (paroxysmal: n = 97), CLOSE: n = 94 (paroxysmal: n = 74)] were included. Pulmonary vein isolation was reached in all in similar procedure duration (CLOSE: 107 ± 25 vs. AI: 102 ± 24 min; P = 0.1) and similar radiofrequency time (CLOSE: 36 ± 11 vs. AI: 37 ± 8 min; P = 0.4) but first pass isolation was higher in CLOSE vs. AI [left veins: 90% vs. 80%; P < 0.05 and right veins: 84% vs. 73%; P < 0.05]. Twelve-month off-AAD freedom of AF/AT was higher in CLOSE vs. AI [79% (paroxysmal: 85%) vs. 64% (paroxysmal: 68%); P < 0.05]. Only four patients (2%) without recurrence were on AAD during follow-up. Major complications were similar (CLOSE: 2.1% vs. AI: 2.5%; P = 0.87).ConclusionThe CLOSE protocol is more effective than a PVI approach solely using AI, especially in paroxysmal AF. In this off-AAD study, 79% of patients were free from AF/AT during 12-month follow-up. The STSF catheter appears to be safe using conventional CLOSE targets.
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Affiliation(s)
- Benjamin Berte
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Gabriella Hilfiker
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Federico Moccetti
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Thomas Schefer
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Vanessa Weberndörfer
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Florim Cuculi
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Stefan Toggweiler
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
| | - Frank Ruschitzka
- Cardiology Department, Universitätsspital Zürich, Zürich, Switzerland
| | - Richard Kobza
- Heart Centre, LUKS, Luzerner Kantonsspital, Luzerner Kantonsspital, Spitalstrasse 1, Lucerne, Switzerland
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Pambrun T, Durand C, Constantin M, Masse A, Marra C, Meillet V, Haïssaguerre M, Jaïs P, Bortone A. High-Power (40-50 W) Radiofrequency Ablation Guided by Unipolar Signal Modification for Pulmonary Vein Isolation: Experimental Findings and Clinical Results. Circ Arrhythm Electrophysiol 2019; 12:e007304. [PMID: 31164003 DOI: 10.1161/circep.119.007304] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Although proposed to facilitate pulmonary vein isolation (PVI), high-power ablation may favor extracardiac damage. Negative component abolition of the unipolar signal reflects lesion transmurality. The present study sought to evaluate the safety and efficacy of high-power ablation using unipolar signal modification as a local end point. Methods High power and standard power were compared in 4 swine and 100 consecutive patients referred for PVI. The first 50 patients were included in the control group (25-30 W) and the last 50 patients in the study group (40-50 W). Atrial radiofrequency applications were stopped 2 s (study group and swine) or 5 s (control group) after unipolar signal modification. Ventricular radiofrequency applications of 500 J (25 W·20 s versus 50 W·10 s) were performed at the swine epicardium. Results Swine gross necropsy did not show any extracardiac damage related to atrial lesions. At equal energy of 500 J, 50 W lesions were deeper (3±0.9 versus 2.6±1.1 mm; P=0.03) and wider (6.2±2 versus 5±2.3 mm; P=0.006) than 25 W lesions. No complications occurred during the clinical study, whatever the power output used for PVI. For a similar sinus rhythm maintenance at 12 months (90% versus 88%; P=0.75), the study group displayed higher first-pass PVI (92% versus 73%; P<0.001), lower acute pulmonary vein reconnection (2% versus 17%; P<0.001), reduced procedure time (73.1±18.2 versus 107.4±21.2 min; P<0.001), and ablation time (13±2.9 versus 30.3±8.8 min; P<0.001). Conclusions High-power PVI guided by unipolar signal modification safely decreases procedural burden while ensuring robust 12-month outcomes.
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Affiliation(s)
- Thomas Pambrun
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L'Institut de RYthmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, France (T.P, M.C., M.H., P.J.)
| | - Cyril Durand
- Département de Rythmologie, Infirmerie Protestante, Lyon, France (C.D.)
| | - Marion Constantin
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L'Institut de RYthmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, France (T.P, M.C., M.H., P.J.)
| | - Alexandre Masse
- Biosense Webster France, Johnson & Johnson, Issy les Moulin-eaux (A.M., C.M., V.M.)
| | - Céline Marra
- Biosense Webster France, Johnson & Johnson, Issy les Moulin-eaux (A.M., C.M., V.M.)
| | - Valentin Meillet
- Biosense Webster France, Johnson & Johnson, Issy les Moulin-eaux (A.M., C.M., V.M.)
| | - Michel Haïssaguerre
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L'Institut de RYthmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, France (T.P, M.C., M.H., P.J.)
| | - Pierre Jaïs
- Hôpital Cardiologique du Haut-Lévêque, CHU Bordeaux, L'Institut de RYthmologie et modélisation Cardiaque (LIRYC), Université Bordeaux, France (T.P, M.C., M.H., P.J.)
| | - Agustín Bortone
- Service de Cardiologie, Hôpital Privé Les Franciscaines, Nîmes, France (A.B.)
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Tanaka N, Tanaka K, Ninomiya Y, Hirao Y, Oka T, Okada M, Inoue H, Nakamaru R, Takayasu K, Kitagaki R, Koyama Y, Okamura A, Iwakura K, Sakata Y, Fujii K, Inoue K. Comparison of the Safety and Efficacy of Automated Annotation-Guided Radiofrequency Ablation and 2nd-Generation Cryoballoon Ablation in Paroxysmal Atrial Fibrillation. Circ J 2019; 83:548-555. [DOI: 10.1253/circj.cj-18-1035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Koji Tanaka
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | | | - Yuko Hirao
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | - Takafumi Oka
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | - Masato Okada
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | | | - Ryo Nakamaru
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | | | - Ryo Kitagaki
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | | | | | | | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
| | - Kenshi Fujii
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
| | - Koichi Inoue
- Cardiovascular Center, Sakurabashi-Watanabe Hospital
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A Pilot Study on Parameter Setting of VisiTag™ Module during Pulmonary Vein Isolation. Cardiol Res Pract 2018; 2018:8960941. [PMID: 30510796 PMCID: PMC6231390 DOI: 10.1155/2018/8960941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Accepted: 08/16/2018] [Indexed: 12/04/2022] Open
Abstract
Objectives To identify optimal predefined criteria (OPC) for filters of the VisiTag™ module in the CARTO 3 system during pulmonary vein isolation (PVI). Methods Thirty patients with atrial fibrillation (AF) who experienced PVI first were enrolled. PVI was accomplished by using a Thermocool SmartTouch catheter. Ablation lesions were tagged automatically as soon as predefined criteria of the VisiTag™ module were met. OPC should be that ablation with the setting resulting in the conduction gap (CG) as few as possible, while contiguous encircling ablation line (CEAL) without the tag gap (TG) on the 3D anatomic model as much as possible. Result(s) When ablation with parameter setting is being catheter movement with a 3 mm distance limit for at least 20 s and force over time (FOT) being off, there were 60 CEAL without TG on the 3D anatomic model. However, 26 CGs were found. After changing FOT setting to be a minimal force of 5 g with 50% stability time, 22 TGs were displayed. Of them, 20 TGs were accompanied by CGs. On reablation at sites of TG with changed parameter setting, 18 CGs were eliminated when 20 TGs disappeared. When reablation with FOT is being a minimal force of 10 g with 50% stability time, 6 remaining CGs were eliminated. However, there was no CEAL. With a mean of follow-up 10.93 months, 2 patients with persistent AF suffered AF recurrence. Conclusion A 3 mm distance limit for at least 20 s and FOT being a minimal force of 5 g with 50% stability time might be OPC for the VisiTag™ module.
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18
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Safety and efficacy of atrial fibrillation ablation guided by Ablation Index module. J Interv Card Electrophysiol 2018; 54:9-15. [DOI: 10.1007/s10840-018-0420-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 07/18/2018] [Indexed: 11/25/2022]
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