What is the effect of preoperative angiotensin converting enzyme inhibitor or angiotensin receptor blocker use on the frequency of atrial fibrillation after cardiac surgery?
A cohort study from the atrial fibrillation suppression trials II and III showed that preoperative use of angiotensin converting enzyme inhibitors or angiotensin receptor blockers is not associated with an increased frequency of atrial fibrillation after cardiac surgery. This suggests that these drugs may be safely used prior to cardiac surgery without fear of increasing the risk of atrial fibrillation.