A 67-Year-Old Man With Palpitations During Sleep.

A 67-year-old man with a history of atrial fibrillation (AF) presented to his physician with symptoms of episodic, nighttime palpitations and excessive daytime sleepiness. Four years prior he underwent radiofrequency ablation after a confirmed diagnosis of AF with subsequent resolution of his palpitations. His palpitations returned approximately 1 year following the ablation.