Atrial fibrillation following coronary artery surgery is common, especially in elderly patients but despite numerous studies its pathophysiological basis is still incompletely understood. It is usually benign and self-limiting, but may be associated with haemodynamic compromise, prolonged hospitalization and embolic stroke. No risk factors (apart from age and preoperative (β-blocker withdrawal) have been shown to be associated with its occurrence. Conventional treatment is usually effective but no prophylactic regime has been identified. Until such a regime is found the incidence of atrial fibrillation following myocardial revascularization may only be reduced by continuing treatment in patients on β-blockers in the preoperative period and re-establishing this therapy after surgery.
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