05 May 2019 : Clinical Research
A Retrospective Study of Atrial Fibrillation Following Cavotricuspid Isthmus Ablation for Atrial FlutterIzabela Warchoł1ACDE*, Bartłomiej Jacek Bińkowski1ABD, Tomasz Kucejko1ABD, Joanna Sobiczewska1ACF, Andrzej Lubiński1ADF
Med Sci Monit 2019; 25:3316-3320
BACKGROUND: Catheter radiofrequency ablation for typical atrial flutter is considered to be safe and effective. However, atrial fibrillation (AF) following cavotricuspid isthmus ablation for atrial flutter has been reported in patients without a previous history of AF, which has implications for the decision to use oral anticoagulation. This retrospective study at a single center aimed to evaluate the occurrence of AF in patients after successful cavotricuspid isthmus ablation of typical atrial flutter and to determine the incidence and associations with AF during follow-up.
MATERIAL AND METHODS: Between January 2011 and July 2017, of 110 consecutive patients who underwent cavotricuspid isthmus ablation for typical atrial flutter, 67 patients had no previous history of AF, of which 40 patients underwent follow-up. The 40 patients included in this retrospective clinical study included 34 men and 6 women, with a mean age of 67±10 years.
RESULTS: Forty patients underwent post-ablation follow-up for 46±23 months, and 12 patients (30%) developed AF; six patients (15%) experienced recurrent of atrial flutter. More than half of the patients with post-ablation AF were asymptomatic with a European Heart Rhythm Association (EHRA) score of 1, and univariate analysis showed the absence of variables associated with the prevalence of AF.
CONCLUSIONS: Following cavotricuspid isthmus ablation for atrial flutter, recurrence of atrial flutter was found in 15% of cases, and asymptomatic AF occurred in 30%. These findings have implications for the use of post-ablation oral anticoagulation treatment, which is often discontinued following ablation therapy and before patient follow-up.
Keywords: Anticoagulants, Atrial Fibrillation, Atrial Flutter, Catheter Ablation, Aged, Aged, 80 and over, Incidence, Middle Aged, Retrospective Studies, Risk Factors, Treatment Outcome, Tricuspid Valve
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