Cited by 17Cardiac Arrhythmias and TreatmentsAtrial Fibrillation Management and OutcomesCardiac pacing and defibrillation studies

Radiofrequency ablation of atypical atrial flutter after cardiac surgery or atrial fibrillation ablation: a randomized comparison of open-irrigation-tip and 8-mm-tip catheters

Bai, Rong, Fahmy, Tamer S., Patel, Dimpi, Di Biase, Luigi, Riedlbauchova, Lucie, Wazni, Oussama M., Schweikert, Robert A., Burkhardt, J. David +2 more·2007·Heart Rhythm

Abstract

Background The efficacy of radiofrequency ablation of atypical atrial flutter (AAFL) remains relatively low. This is probably related to the complex mechanism of this arrhythmia or may be due to an inability to deliver sufficient energy during ablation.Objective The aim of this study is to assess whether an open-irrigation-tip catheter or an 8-mm-tip catheter is more effective for ablation of AAFL in patients with prior history of cardiac surgery and/or catheter ablation of atrial fibrillation.Methods Seventy patients with AAFL after cardiac surgery/atrial fibrillation ablation were randomized for ablation with either an open-irrigation-tip catheter (Group 1, n=36) or an 8-mm-tip catheter (Group 2, n=34). Acute success was defined as the termination of AAFL by radiofrequency delivery and noninducibility by programmed pacing at the end of procedure. Patients' postoperative courses were followed up by means of intermittent standard electrocardiogram (ECG), transtelephonic ECG monitoring, and telephone interview. All patients underwent 48-hour Holter monitoring at their 3-, 6-, and 9-month follow-up after ablation.Results Acute success was achieved in 34 patients (94.4%) in Group 1 and 26 patients (76.5%) in Group 2 (P<.05). As compared with the patients in Group 2, more patients in Group 1 remained in sinus rhythm without antiarrhythmic drugs at 90-day follow-up (22 vs 8, P<.05). After 10 months of follow-up, 91.7% of the patients from Group 1 were free of atrial tachyarrhythmias, whereas only 58.9% of the patients from Group 2 remained in sinus rhythm (P <.05). The fluoroscopy and radiofrequency times were significantly shorter when an open-irrigation-tip ablation catheter was used.Conclusion In patients with a prior history of cardiac surgery or ablation for atrial fibrillation, an open-irrigation-tip catheter is superior to an 8-mm-tip catheter for radiofrequency ablation of scar-related AAFLs. Patients ablated with an open-irrigation-tip catheter seem to have higher acute success rate with less x-ray exposure and radiofrequency delivery, and have a more favorable long-term outcome with more patients maintaining sinus rhythm without antiarrhythmic drugs.

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Crossref · 10.1016/j.hrthm.2007.07.027

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Authors
Bai, R., Fahmy, T. S., Patel, D., Di Biase, L., Riedlbauchova, L., Wazni, O. M., Schweikert, R. A., Burkhardt, J. D., Saliba, W., & Natale, A.
Affiliations
  • University of Insubria (IT)
  • Cleveland Clinic (US)
Corresponding author
Natale, Andrea
Venue
Heart Rhythm
Publisher
Elsevier BV
Published
2007-12
Volume
4
Issue
12
Pages
1489-1496
ISSN
1547-5271 (ISSN-L)
OpenAlex
W2061884457
Cited by
17
References
25
Citations by year
2023: 1 · 2022: 2 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 2 · 2015: 1
FWCI
0.93
Type
journal article
Language
en
Open access
closed
Locations
  • Heart Rhythm (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
Keywords
atypical atrial flutter, radiofrequency catheter ablation, cardiac surgery, atrial fibrillation ablation, acute procedural success, sinus rhythm maintenance, fluoroscopy time, X-ray exposure, catheter ablation complications, postoperative arrhythmia
MeSH terms
Aged, Atrial Fibrillation, Atrial Flutter, Female, Cardiac Surgical Procedures, Humans, Male, Middle Aged, Catheter Ablation

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