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Radauskaite G, Račkauskas G, Danilenko S, Marinskis G, Aidietis A. Results of a 4-Year Follow Up of Patients with Paroxysmal and Persistent Atrial Fibrillation after Cryoablation. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2036. [PMID: 38004085 PMCID: PMC10673237 DOI: 10.3390/medicina59112036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Background and Objectives: Cryoablation is an established treatment method for atrial fibrillation (AF). We present the long-term results of cryoablation in 94 patients with paroxysmal and persistent AF treated in our center. Materials and Methods: This was an observational, retrospective study of 94 patients who underwent a cryoablation procedure for paroxysmal or persistent AF from 2015 to 2017. The follow up was 51 ± 3 months. The absence of arrhythmia was checked at 6, 12, 24, and 48 months after the procedure with 24 h Holter monitoring. We evaluated echocardiography parameters before and 48 months after cryoablation. The quality of life was assessed by calculating EHRA scores at each visit. Results: The mean history of pre-procedural AF duration was 55.3 ± 8.6 months. Paroxysmal AF was present in 42% of patients and persistent AF in 58%. Comparing the EHRA classes, a statistically significant difference was observed between the score assessed before the procedure and the score after one year, as well as when comparing the rates before the procedure and four years after the procedure (p < 0.000). The recurrence of AF was observed in 22.3% of patients 1 year after the procedure, in 26.6% of patients 2 years after the procedure, and in 34% of patients 4 years after the procedure; 9.3% of them were left in permanent AF. During the observation period, 28% of patients underwent a repeated pulmonary vein isolation procedure, and 6% of patients had a permanent pacemaker implanted. Five hematomas (5%) and one instance of phrenic nerve palsy (1%) were observed during the procedure. Conclusions: The rate of arrhythmia recurrence increased every year after cryoablation. Quality of life improved after the procedure, despite the recurrence of AF. A quarter of patients had to undergo a repeat pulmonary vein isolation procedure.
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Affiliation(s)
- Greta Radauskaite
- Department of Cardiovascular Medicine, Vilnius University, 01513 Vilnius, Lithuania; (G.R.); (G.M.); (A.A.)
- Vilnius University Hospital Santaros Clinics, 08661 Vilnius, Lithuania
| | - Gediminas Račkauskas
- Department of Cardiovascular Medicine, Vilnius University, 01513 Vilnius, Lithuania; (G.R.); (G.M.); (A.A.)
- Vilnius University Hospital Santaros Clinics, 08661 Vilnius, Lithuania
| | - Svetlana Danilenko
- Department of Mathematical Statistics, Vilnius Gediminas Technical University, 10223 Vilnius, Lithuania;
- Department of Human and Medical Genetics, Vilnius University, 01513 Vilnius, Lithuania
| | - Germanas Marinskis
- Department of Cardiovascular Medicine, Vilnius University, 01513 Vilnius, Lithuania; (G.R.); (G.M.); (A.A.)
- Vilnius University Hospital Santaros Clinics, 08661 Vilnius, Lithuania
| | - Audrius Aidietis
- Department of Cardiovascular Medicine, Vilnius University, 01513 Vilnius, Lithuania; (G.R.); (G.M.); (A.A.)
- Vilnius University Hospital Santaros Clinics, 08661 Vilnius, Lithuania
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Mulder BA, Al-Jazairi MIH, Magni FT, Groenveld HF, Tieleman RG, Wiesfeld ACP, Tan YES, Van Gelder IC, Rienstra M, Blaauw Y. Identifying patients with atrial fibrillation recurrences after two pulmonary vein isolation procedures. Open Heart 2021; 8:openhrt-2021-001718. [PMID: 34949648 PMCID: PMC8705215 DOI: 10.1136/openhrt-2021-001718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 11/29/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction Pulmonary vein isolation (PVI) is an important treatment for atrial fibrillation (AF). However, many patients need more than one procedure to maintain long-term sinus rhythm. Even after two PVIs some may suffer from AF recurrences. We aimed to identify characteristics of patients who fail after two PVI procedures. Methods and results We included 557 consecutive patients undergoing a first PVI procedure with a second-generation 28 mm cryoballoon. Follow-up procedures were performed using radiofrequency ablation targeting reconnected PVs only. Recurrent AF was defined as any episode of AF lasting >30 s on ECG or 24 hour Holter monitoring performed at 3, 6 and 12 months post procedure. Mean age was 59.1±10.2 years, 383 (68.8%) were male, 448 (80.4%) had paroxysmal AF and the most common underlying condition was hypertension (36.6%). A total of 140/557 (25.1%) patients underwent redo procedure with PVI only. Of these patients 45 (32.4%) had recurrence of AF. These patients were comparable regarding age and sex to those in sinus rhythm after one or two procedures. Multivariate logistic regression showed that non-paroxysmal AF (OR 1.08 (95% CI 1.01 to 1.15), estimated glomerular filtration rate (OR 0.96, 95% CI 0.94 to 0.99), bundle branch block (OR 4.17, 95% CI 1.38 to 12.58), heart failure (OR 4.17, 95% CI 1.38 to 12.58) and Left Atrium Volume Index (OR 1.04, 95% CI 1.01 to 1.08) were associated with AF recurrence after two PVIs. The area under the curve for the identified risk factors was 0.74. Conclusions Using a PVI-only approach, recurrence of AF after two AF ablation procedures is associated with more advanced underlying disease and persistent types of AF.
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Affiliation(s)
- Bart A Mulder
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Meelad I H Al-Jazairi
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Federico T Magni
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Hessel F Groenveld
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Robert G Tieleman
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Ans C P Wiesfeld
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Yong E S Tan
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Isabelle C Van Gelder
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Michiel Rienstra
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands.,Thorax Center, Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
| | - Yuri Blaauw
- Department of Cardiology, University Medical Centre Groningen, Groningen, The Netherlands
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Okishige K, Yamauchi Y, Nagase S, Kusano K, Miyamoto K, Ozawa T, Sawayama Y, Takeda H, Manita M, Asahi T, Miwa Y, Soejima K, Sasano T. Transcatheter cryo-ablation of septal accessory pathways, multicenter observational study in Japan. J Cardiol 2020; 77:380-387. [PMID: 33342639 DOI: 10.1016/j.jjcc.2020.10.012] [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: 08/11/2020] [Revised: 09/16/2020] [Accepted: 09/26/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Ablation using radiofrequency energy has to be carefully performed when the arrhythmia substrate is located in close proximity to the atrioventricular (AV) node due to the risk of inadvertent permanent AV block. The aim of this study was to evaluate the efficacy and safety of catheter-based cryo-therapy for septal accessory pathways (APs). METHODS A total of eleven patients (median = 56.3 years, range 13-74 years) with septal APs underwent cryoablation. Ice-mapping was performed during sinus rhythm and an AV reciprocating tachycardia utilizing the APs as a requisite limb with cooling of the catheter tip temperature to a maximum of -30℃ for less than 45 s. Cryo-ablation was performed for 4 min at a temperature of -80℃ only if ice-mapping abolished the pre-excitation or retrograde conduction over the AP without injury to the AV nodal conduction. RESULTS Cryo-ablation was acutely successful in all eleven patients. No permanent cryo-related complications or adverse outcomes were reported. During the follow-up (range 14-26 months), no patients experienced any arrhythmia recurrences. CONCLUSION Ice-mapping was a feasible and reliable method to determine the exact location of the APs owing to the possibility of validating the ablation site. Cryo-ablation of APs located near the AV junction is a safe and efficacious technique with a high success rate over the long term. IRB INFORMATION Ethical Committee of Japan Red Cross Yokohama City Bay Hospital #2018-19.
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Affiliation(s)
- Kaoru Okishige
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan.
| | - Yasuteru Yamauchi
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, Yokohama, Japan
| | - Satoshi Nagase
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kengo Kusano
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Koji Miyamoto
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Tomoya Ozawa
- Cardiovascular Department, Shiga University, School of Medicine, Ohtsu, Japan
| | - Yuichi Sawayama
- Cardiovascular Department, Shiga University, School of Medicine, Ohtsu, Japan
| | - Hiroto Takeda
- Cardiovascular Center, Ohta-Nishinouchi Hospital, Kouriyama, Japan
| | - Mamoru Manita
- Cardiology Department, Naha Municipal Hospital, Naha, Japan
| | - Tomohiro Asahi
- Cardiology Department, Naha Municipal Hospital, Naha, Japan
| | - Yosuke Miwa
- Cardiovascular Department, Kyorin University, School of Medicine, Mitaka, Japan
| | - Kyoko Soejima
- Cardiovascular Department, Kyorin University, School of Medicine, Mitaka, Japan
| | - Tetsuo Sasano
- Cardiovascular Department, Tokyo Medical and Dental University, Tokyo, Japan
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Okada M, Tanaka N, Oka T, Tanaka K, Ninomiya Y, Hirao Y, Yoshimoto I, Inoue H, Kitagaki R, Onishi T, Koyama Y, Okamura A, Iwakura K, Sakata Y, Fujii K, Inoue K. Clinical significance of left ventricular reverse remodeling after catheter ablation of atrial fibrillation in patients with left ventricular systolic dysfunction. J Cardiol 2020; 77:500-508. [PMID: 33272779 DOI: 10.1016/j.jjcc.2020.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/03/2020] [Accepted: 10/24/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Left ventricular (LV) reverse remodeling (LVRR) after catheter ablation of atrial fibrillation (AFCA) has not been fully described. This study investigated the predictors and clinical outcomes of LVRR after AFCA in patients with LV systolic dysfunction. METHODS Of 3319 consecutive patients who underwent first-time AFCA between January 2012 and October 2019, 376 with a baseline LV ejection fraction of <50% were retrospectively evaluated. They were subjected to 256-slice multidetector computed tomography (MDCT) scanning at baseline and 3 months after AFCA. The LVRR was defined as a decrease in the LV end-systolic volume of ≥15%. RESULTS The prevalence of LVRR was 83% (n = 306). Multivariate logistic regression analysis including age, body mass index, diabetic status, beta-blocker use, and LV diastolic diameter revealed that the predictors of LVRR were non-paroxysmal atrial fibrillation (AF) (odds ratio, 2.68; 95% confidence interval, 1.42-5.05; p = 0.002) and absence of apparent underlying structural heart disease (4.81; 2.31-10.0; p <0.001). The prevalence of LVRR differed depending on AF recurrence pattern prior to the post-MDCT [no episode vs. paroxysmal episode (lasting <7 days) vs. persistent episode (lasting ≥7 days), 84% vs. 81% vs. 63%, respectively, p = 0.023]. During a median follow-up of 32 months, the incidence of paroxysmal form of AF recurrence was similar, whereas persistent form of AF recurrence was less frequent in patients with LVRR (10.5% vs. 18.6%, p = 0.018). Heart failure hospitalizations (2.3% vs. 15.7%, p <0.001), cardiovascular deaths (0.7% vs. 4.3%, p = 0.015), and all-cause deaths (1.3% vs. 5.7%, p = 0.018) were similarly less frequent in those with LVRR. CONCLUSIONS LVRR after AFCA, which was predicted by non-paroxysmal AF without any apparent structural heart disease at baseline, was associated with persistent form of AF recurrence prior to the evaluation. LVRR was associated with favorable clinical outcomes.
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Affiliation(s)
- Masato Okada
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Nobuaki Tanaka
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Takafumi Oka
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan; Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koji Tanaka
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Yuichi Ninomiya
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Yuko Hirao
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Issei Yoshimoto
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Hiroyuki Inoue
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan; Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ryo Kitagaki
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Toshinari Onishi
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Yasushi Koyama
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Atsunori Okamura
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Katsuomi Iwakura
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Yasushi Sakata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kenshi Fujii
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan
| | - Koichi Inoue
- Cardiovascular Center, Sakurabashi-Watanabe Hospital, 2-4-32 Umeda, Kita-ku, Osaka 530-0001, Japan.
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Limited efficacy of a figure-of-eight suture for hemostasis after cryoballoon atrial fibrillation ablation with uninterrupted oral anticoagulants. J Cardiol 2020; 76:30-34. [DOI: 10.1016/j.jjcc.2020.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/14/2020] [Accepted: 01/28/2020] [Indexed: 12/31/2022]
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Verlato R, Pieragnoli P, Iacopino S, Rauhe W, Molon G, Stabile G, Rebellato L, Allocca G, Arena G, Rovaris G, Sacchi R, Catanzariti D, Pepi P, Tondo C. Cryoballoon or radiofrequency ablation? Alternating technique for repeat procedures in patients with atrial fibrillation. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2020; 43:687-697. [PMID: 32510595 DOI: 10.1111/pace.13975] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/21/2020] [Accepted: 05/31/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Which technique is better for repeat ablation in patients with atrial fibrillation (AF) remains unclear. The aim of the study was to compare long-term efficacy of repeat ablation using the alternative technique for the first redo ablation procedure: (a) cryoballoon (CB) re-ablation after a failed index pulmonary vein isolation (PVI) with radiofrequency (RF) ablation, RF-then-CB group or (b) RF repeat ablation following a failed CB ablation, CB-then-RF group. METHODS Within the 1STOP Italian Project, consecutive patients undergoing repeat ablation with a different technique from the index procedure were included. RESULTS We studied 474 patients, 349 in RF-then-CB and 125 in CB-then-RF group. Less women (21% vs 30%; P = .041), more persistent AF (33% vs 22%; P = .015), longer duration of AF (60 vs 31 months; P < .001), and more hypertension (50% vs 36%; P = .007) were observed in the RF-then-CB cohort as compared with the CB-then-RF group. The number of reconnected PVs was 3.7 ± 0.7 and 1.4 + 1.3 in RF-then-CB and CB-then-RF group, respectively (P < .001). During the follow-up, significantly less AF recurrence occurred in the CB-then-RF group (22% vs 8%, HR = 0.46; 95% CI: 0.24-0.92; P = .025). Cohort designation was the only independent predictor of AF recurrence. CONCLUSION Alternation of energy source for repeat ablation was safe and effective, regardless the energy used first. However, patients initially treated with CB PVI undergoing repeat ablation with RF current had less AF recurrence at long-term follow-up as compared with those originally treated by RF ablation receiving a CB repeat ablation.
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Affiliation(s)
- Roberto Verlato
- AULSS 6 Euganea, Ospedale di Cittadella-Camposampiero, Padova, Italy
| | | | | | | | | | - Giuseppe Stabile
- Casa di Cura Montevergine, Mercogliano, Italy.,Clinica San Michele, Maddaloni, Italy
| | - Luca Rebellato
- Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
| | - Giuseppe Allocca
- Santa Maria dei Battuti, Presidio Ospedaliero, Conegliano, Italy
| | | | | | | | | | | | - Claudio Tondo
- Cardiac Arrhythmia Research Centre, Centro Cardiologico Monzino IRCCS Milan, Milan, Italy
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Analysis of the driving mechanism in paroxysmal atrial fibrillation: comparison of the activation sequence between the left atrial body and pulmonary vein. J Cardiol 2020; 75:673-681. [PMID: 32037253 DOI: 10.1016/j.jjcc.2020.01.004] [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: 09/26/2019] [Revised: 12/09/2019] [Accepted: 01/01/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND It has been shown that most paroxysmal atrial fibrillation (AF) can be terminated by pulmonary vein (PV) isolation alone, suggesting that rapid discharges from PV drive AF. To define the driving mechanism of AF, we compared the activation sequence in the body of left atrium (LA) to that within PV. METHODS Endocardial noncontact mapping of LA body (LA group; n = 16) and selective endocardial mapping of left superior PV (LSPV) (PV group; n = 13) were performed in 29 paroxysmal AF patients. The frequency of pivoting activation, wave breakup, and wave fusion observed in LA were compared to those in LSPV to define the driving mechanism of AF. Circumferential ablation lesion around left PV was performed after right PV isolation to examine the effect of linear lesion around PV on AF termination both in LA and PV groups. RESULTS The frequency of pivoting activation, wave breakup, and wave fusion in PV group were significantly higher than those in LA group (36.5 ± 17.7 vs 5.0 ± 2.2 times/seconds, p < 0.001, 10.1 ± 4.3 vs 5.0 ± 2.2 times/seconds, p = 0.004, 18.1 ± 5.7 vs 11.0 ± 5.2, p = 0.002). Especially in the PV group, the frequency of pivoting activation was significantly higher than that of wave breakup and wave fusion (36.5 ± 17.7 vs 10.1 ± 4.3 times/seconds, p < 0.001, 36.5 ± 17.7 vs 18.1 ± 5.7 times/seconds, p < 0.001). These disorganized activations in LSPV were eliminated by the circumferential ablation lesion around left PV (pivoting activation; 36.5 ± 17.7 vs 9.3 ± 2.3 times/seconds, p < 0.001, wave breakup; 10.1±1.3 times/seconds, p = 0.003, wave fusion; 18.1 ± 5.7 vs 5.7 ± 1.8, p < 0.001), resulted in AF termination in all patients in both LA and PV groups. CONCLUSIONS Activation sequence within PV was more disorganized than that in LA body. Frequent episodes of pivoting activation rather than wave breakup and fusion observed within PV acted as the driving sources of paroxysmal AF.
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Spartalis M, Iliopoulos DC, Spartalis E, Athanasiou A, Paschou SA, Livanis E, Voudris V, Siasos G. Efficacy of cryoablation for paroxysmal and persistent atrial fibrillation in patients with structural heart disease. J Cardiol 2019; 74:543. [PMID: 31256930 DOI: 10.1016/j.jjcc.2019.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 05/10/2019] [Indexed: 12/07/2022]
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Iacopino S, Pieragnoli P, Arena G, Sciarra L, Landolina M, Manfrin M, Verlato R, Solimene F, Sacchi R, Rebellato L, Rovaris G, Molon G, Infusino T, Tondo C. A comparison of acute procedural outcomes within four generations of cryoballoon catheters utilized in the real‐world multicenter experience of 1STOP. J Cardiovasc Electrophysiol 2019; 31:80-88. [DOI: 10.1111/jce.14271] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 10/14/2019] [Accepted: 11/04/2019] [Indexed: 01/06/2023]
Affiliation(s)
| | - Paolo Pieragnoli
- Cardiotoracovascolare, Ospedale CareggiUniversity of FlorenceFlorence Italy
| | | | | | | | | | | | | | | | | | | | - Giulio Molon
- IRCCS Sacro Cuore Don Calabria HospitalVerona Italy
| | | | - Claudio Tondo
- Cardiac Arrhythmia Research CentreCentro Cardiologico Monzino IRCCSMilano Italy
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