Question/Methods: Among adults who consume ≥10 drinks/week with symptomatic paroxysmal or persistent atrial fibrillation successfully converted to sinus rhythm, investigators conducted a multicentre RCT of control versus alcohol abstinence. Two blinded cardiologists reviewed tracings from intensive outpatient monitoring to adjudicate AFib recurrence.
Findings Abstinence significantly decreased AFib burden and AFib recurrence within 6 months (hazard ratio 0.55, 95% CI 0.36-0.84). At 6 months, NNT = 5.
Limitations: Abstinence group reported an 87.5% decrease in alcohol intake – unclear if complete abstinence versus minimal consumption is ideal.
Interpretation: Reduction in alcohol use should be encouraged to decrease AFib burden and symptomatic episodes.
By: Dr. Michael Wong