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Kawaji T, Aizawa T, Yamano S, Naka M, Bao B, Hojo S, Tezuka Y, Nakatsuma K, Matsuda S, Kato M, Yokomatsu T, Miki S. Reliable focal and rotational activations in CARTOFINDER mapping using the OctaRay catheter. J Cardiovasc Electrophysiol 2024; 35:328-340. [PMID: 38105441 DOI: 10.1111/jce.16159] [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: 07/17/2023] [Revised: 11/22/2023] [Accepted: 12/07/2023] [Indexed: 12/19/2023]
Abstract
INTRODUCTION The aim of the current study was to elucidated the reliable atrial fibrillation (AF) drivers identified by CARTOFINDER using OctaRay catheter. METHODS AND RESULTS The reliability of focal and rotational activations identified by CARTOFINDER using OctaRay catheter was assessed by the sequential recordings in each site of both atrium before and after pulmonary vein isolation (PVI) in 10 persistent AF patients. The outcome measures were the reproducibility rate during the sequential recordings and the stability rate between pre- and post-PVI as reliable focal and rotational activations. The study results were compared with those under use of PentaRay catheter (N = 18). Total 68928 points of 360 sites in OctaRay group and 24 177 points of 311 sites in PentaRay were assessed. More focal activation sites were identified in OctaRay group than PentaRay group (7.9% vs. 5.7%, p < .001), although the reproducibility rate and the stability rate were significantly lower in OctaRay group (45.3% vs. 58.9%, p < .001; 11.2% vs. 28.4%, p < .001). Meanwhile, the prevalence of reproducible focal activation sites among overall points was comparable (3.6% vs. 3.3%, p = .08). Regarding rotational activation, more rotational activation sites were identified in OctaRay group (5.1% vs. 0.2%, p < .001), and the reproducibility rate and the stability rate were significantly higher in OctaRay group (45.2% and 12.5% vs. 0.0%, p < .001). Both reliable focal and rotational activation sites were characterized by significantly shorter AF-cycle length (CL) and higher repetition of focal and rotational activations during the recordings compared with the sites of non or unreliable focal and rotational activations. CONCLUSION In CARTOFINDER, OctaRay catheter could identify reliable focal activation with high resolution and reliable rotational activation compared with PentaRay catheter. The repetitive focal and rotational activations with short AF-CL could be the potential target during ablation.
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Affiliation(s)
- Tetsuma Kawaji
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takanori Aizawa
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Saki Yamano
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Misaki Naka
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Bingyuan Bao
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Shun Hojo
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Yuji Tezuka
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Kenji Nakatsuma
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Shintaro Matsuda
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | - Masashi Kato
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
| | | | - Shinji Miki
- Department of Cardiology, Mitsubishi Kyoto Hospital, Kyoto, Japan
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Kataoka N, Imamura T. Optimal catheter ablation procedure for premature ventricular contraction originating from the free wall of tricuspid annulus. Clin Cardiol 2024; 47:e24225. [PMID: 38402564 PMCID: PMC10835505 DOI: 10.1002/clc.24225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/10/2024] [Indexed: 02/26/2024] Open
Affiliation(s)
- Naoya Kataoka
- Second Department of Internal MedicineUniversity of ToyamaToyamaJapan
| | - Teruhiko Imamura
- Second Department of Internal MedicineUniversity of ToyamaToyamaJapan
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Masuda M, Matsuda Y, Uematsu H, Asai M, Okamoto S, Ishihara T, Nanto K, Tsujimura T, Hata Y, Higashino N, Nakao S, Mano T. Comparison of voltage maps using OCTARAY catheter and PENTARAY catheter. Pacing Clin Electrophysiol 2024; 47:28-35. [PMID: 38029377 DOI: 10.1111/pace.14890] [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: 09/11/2023] [Revised: 11/07/2023] [Accepted: 11/15/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Recently, a new OCTARAY® mapping catheter was commercially launched. The catheter is designed to enable high-density mapping and precise signal recording via 48 small electrodes arranged on eight radiating splines. The purpose of this study was to compare bipolar voltage and low-voltage-area size, and mapping efficacy between the OCTARAY catheter and the PENTARAY® catheter METHODS: Twelve consecutive patients who underwent initial and second ablations for persistent atrial fibrillation within 2 years were considered for enrollment. Voltage mapping was performed twice, first during the initial ablation using the PENTARY catheter and second during the second ablation using the OCTARAY Long 3-3-3-3-3 (L3) catheter. RESULTS Mean voltage with the OCTARAY-L3 catheter (1.64 ± 0.57 mV) was 32.3% greater than that with the PENTARAY catheter (1.24 ± 0.46 mV, p < .0001) in total left atrium. Low-voltage-area (<0.50 mV) size with the OCTARAY-L3 catheter was smaller than that with the PENTARAY catheter (6.9 ± 9.7 vs. 11.4 ± 13.0 cm2 , p < .0001). The OCTARAY-L3 catheter demonstrated greater efficacy than the PENTARAY catheter in terms of shorter mapping time (606 ± 99 vs. 782 ± 211 s, p = .008) and more mapping points (3,026 ± 838 vs. 781 ± 342 points, p < .0001). CONCLUSION The OCTARAY catheter demonstrated higher voltage recordings, narrower low-voltage areas, and a more efficacious mapping procedure than the PENTARAY catheter.
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Affiliation(s)
- Masaharu Masuda
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Yasuhiro Matsuda
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Hiroyuki Uematsu
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Mitsutoshi Asai
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Shin Okamoto
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Takayuki Ishihara
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Kiyonori Nanto
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Takuya Tsujimura
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Yosuke Hata
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Naoko Higashino
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Sho Nakao
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
| | - Toshiaki Mano
- Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Hyogo, Japan
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Masuda M, Matsuda Y, Uematsu H, Mano T. Remote entrainment pacing from multiple distant areas to identify a slow conduction isthmus of a reentrant circuit in scar-related atrial tachycardia. HeartRhythm Case Rep 2023; 9:883-885. [PMID: 38204830 PMCID: PMC10774521 DOI: 10.1016/j.hrcr.2023.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024] Open
Affiliation(s)
- Masaharu Masuda
- Kansai Rosai Hospital Cardiovascular Center, Amagasaki, Japan
| | | | | | - Toshiaki Mano
- Kansai Rosai Hospital Cardiovascular Center, Amagasaki, Japan
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Mages C, Steinfurt J, Rahm AK, Thomas D, Majidi R, Kehrle F, André F, Seidensaal K, Rhein B, Wengenmayer T, Gressler A, Westermann D, Herzog R, Debus J, Frey N, Lugenbiel P. Recurrent ventricular tachycardia originating from the "left ventricular summit" effectively eliminated by stereotactic irradiation - A case report. HeartRhythm Case Rep 2023; 9:802-807. [PMID: 38023678 PMCID: PMC10667122 DOI: 10.1016/j.hrcr.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Affiliation(s)
- Christine Mages
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Johannes Steinfurt
- Department of Cardiology and Angiology, Medical Center – University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Ann-Kathrin Rahm
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Dierk Thomas
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Reyhaneh Majidi
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- Institute for Scientific Computing (IWR), Heidelberg University, Heidelberg, Germany
| | - Florian Kehrle
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
- InspirationLabs GmbH, Heidelberg, Germany
| | - Florian André
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Katharina Seidensaal
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
- Heidelberg Institute of Radiation Oncology (HIRO), Heidelberg, Germany
| | - Bernhard Rhein
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
- Heidelberg Institute of Radiation Oncology (HIRO), Heidelberg, Germany
| | - Tobias Wengenmayer
- Interdisciplinary Medical Intensive Care, Medical Center - University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Alexander Gressler
- Department of Cardiology and Angiology, Medical Center – University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Dirk Westermann
- Department of Cardiology and Angiology, Medical Center – University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Roland Herzog
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- Institute for Scientific Computing (IWR), Heidelberg University, Heidelberg, Germany
| | - Jürgen Debus
- Department of Radiation Oncology, Heidelberg University Hospital, Heidelberg, Germany
- Heidelberg Institute of Radiation Oncology (HIRO), Heidelberg, Germany
| | - Norbert Frey
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Patrick Lugenbiel
- Heidelberg Center for Heart Rhythm Disorders (HCR), University Hospital Heidelberg, Heidelberg, Germany
- Informatics for Life Consortium, University Hospital Heidelberg, Heidelberg, Germany
- German Centre for Cardiovascular Research (DZHK), Partner site Heidelberg/Mannheim, University of Heidelberg, Heidelberg, Germany
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Tonko JB, Sporton S, Sawhney V, Dhinoja M. Mapping the unmappable-Rapid high-density contact mapping in hemodynamically unstable ventricular tachycardia using a novel star-shaped multipolar catheter. HeartRhythm Case Rep 2023; 9:749-754. [PMID: 38047195 PMCID: PMC10691944 DOI: 10.1016/j.hrcr.2023.07.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2023] Open
Affiliation(s)
- Johanna B. Tonko
- St Bartholomew’s Hospital, London, United Kingdom
- Institute for Cardiovascular Science, University College London, London, United Kingdom
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Yagishita A, Yamauchi Y, Sagawa Y, Lee KH, Sakama S, Ayabe K, Amino M, Ikari Y, Yoshioka K. Utility of open-window mapping for catheter ablation of an accessory pathway in patients with Wolff-Parkinson-White syndrome. Pacing Clin Electrophysiol 2023; 46:882-889. [PMID: 37493225 DOI: 10.1111/pace.14795] [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: 06/16/2023] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 07/27/2023]
Abstract
BACKGROUND Open-window mapping (OWM) is a novel automated mapping method for catheter ablation of an accessory pathway (AP), in which the local signal is annotated with window-of-interest parameters to analyze both atrial and ventricular signals. This study aimed to determine the utility of OWM in visualizing the location and width of APs in patients with Wolff-Parkinson-White syndrome. METHODS This two-center study enrolled 30 patients (20 males; mean age: 56 years, interquartile range [IQR]: 22-69 years) who underwent high-density OWM with the extended early-meets-late (EEML) algorithm using a 20-electrode, 5-spline catheter (PENTARAY, Biosense Webster). The lower threshold of the EEML was set to adjust the EEML gap to match the propagation mapping, and broad APs were defined as an EEML gap > 1 cm. RESULTS The median mapping points, mapping time, and lower threshold of the EEML were 2482 (IQR: 1755-4000) points, 23 (IQR: 15-30) min, and 23 (IQR: 18-25), respectively. All 30 APs (24 in the mitral annulus and 6 in the tricuspid annulus) were successfully eliminated. Of these APs, 21 (70%) were eliminated by the first radio frequency (RF) application. OWM revealed broad APs in 11 patients (37%), in four of whom (36%) the first RF application achieved a loss of AP conduction (vs. 90% of patients without broad APs; p = .004). CONCLUSION OWM facilitates the visualization of the location and width of APs, which may be particularly useful for predicting whether multiple RF applications are required for broad APs.
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Affiliation(s)
| | - Yasuteru Yamauchi
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Kanagawa, Japan
| | - Yuichiro Sagawa
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Kanagawa, Japan
| | - Kyong Hee Lee
- Department of Cardiology, Tokai University, Kanagawa, Japan
| | - Susumu Sakama
- Department of Cardiology, Tokai University, Kanagawa, Japan
| | - Kengo Ayabe
- Department of Cardiology, Tokai University, Kanagawa, Japan
| | - Mari Amino
- Department of Cardiology, Tokai University, Kanagawa, Japan
| | - Yuji Ikari
- Department of Cardiology, Tokai University, Kanagawa, Japan
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