Why the study?
Does the duration of atrial fibrillation prior to transthoracic cardioversion affect the probability of immediate recurrence of atrial fibrillation in patients with AF?
Does the duration of atrial fibrillation prior to transthoracic cardioversion affect the probability of immediate recurrence of atrial fibrillation in patients with AF?
Immediate recurrence of atrial fibrillation is significantly more likely when cardioversion is performed within 1 hour of AF onset compared to after 24 hours, suggesting delayed cardioversion may be preferable.
Higher IRAF with early cardioversion; hypothesis-generating and should not change practice without randomized confirmation.
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Oral et al. (2003) studied this question.
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