Sinus bradycardia with hiatus hernia.

Three cases of large mixed sliding and paraesophageal hiatus hernias are described. These were associated with episodes of sinus bradycardia. The bradycardia was abolished by atropine pointing to vagal mediation. After surgical repair of the hernia there was no recurrence of the arrhythmia. These cases have been considered worthy of report since sinus bradycardia has not been recorded specifically in association with hiatus hernias.