OBJECTIVE: To see if strategy of ablating the tricuspid annulus-inferior vena cava isthmus (TV-IVC) is superior to electrical cardioversion to prevent recurrences in patients with coarse atrial fibrillation. DESIGN: Prospective randomised controlled multicentre study. SETTING:Four tertiary referral hospitals in the UK. PATIENTS: 57 patients with persistent coarse atrial fibrillation (irregular P waves > or =0.15 mV in > or =1 ECG lead). INTERVENTIONS: Patients were randomised to receive external cardioversion (group A, n = 30) or TV-IVC ablation +/- DC cardioversion (group B, n = 27). MAIN OUTCOME MEASURES: Cardiac rhythm, scores on quality of life and symptom questionnaires were assessed at 4, 16 and 52 weeks after the procedure. RESULTS: 20 (67%) patients in group A and 19 (70%) patients in group B were in sinus rhythm immediately after their index procedure. At 4, 16 and 52 weeks, the number of patients in sinus rhythm were 5, 3 and 2 in group A and 3, 3 and 1 in group B (p = NS). The quality of life and symptom questionnaire scores were similar in the two groups at each period of follow-up, although they were significantly better for sinus rhythm than for atrial fibrillation at each follow-up visit. CONCLUSIONS: As a first-line strategy, TV-IVC ablation offers no advantages over direct current cardioversion for the management of coarse atrial fibrillation.
RCT Entities:
OBJECTIVE: To see if strategy of ablating the tricuspid annulus-inferior vena cava isthmus (TV-IVC) is superior to electrical cardioversion to prevent recurrences in patients with coarse atrial fibrillation. DESIGN: Prospective randomised controlled multicentre study. SETTING: Four tertiary referral hospitals in the UK. PATIENTS: 57 patients with persistent coarse atrial fibrillation (irregular P waves > or =0.15 mV in > or =1 ECG lead). INTERVENTIONS:Patients were randomised to receive external cardioversion (group A, n = 30) or TV-IVC ablation +/- DC cardioversion (group B, n = 27). MAIN OUTCOME MEASURES: Cardiac rhythm, scores on quality of life and symptom questionnaires were assessed at 4, 16 and 52 weeks after the procedure. RESULTS: 20 (67%) patients in group A and 19 (70%) patients in group B were in sinus rhythm immediately after their index procedure. At 4, 16 and 52 weeks, the number of patients in sinus rhythm were 5, 3 and 2 in group A and 3, 3 and 1 in group B (p = NS). The quality of life and symptom questionnaire scores were similar in the two groups at each period of follow-up, although they were significantly better for sinus rhythm than for atrial fibrillation at each follow-up visit. CONCLUSIONS: As a first-line strategy, TV-IVC ablation offers no advantages over direct current cardioversion for the management of coarse atrial fibrillation.
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