HISTORY: , The patient is an 86-year-old woman with a history of aortic valve replacement in the past with paroxysmal atrial fibrillation who was admitted yesterday with the recurrence of such in a setting of hypokalemia, incomplete compliance with obstructive sleep apnea therapy with CPAP, chocolate/caffeine ingestion and significant mental stress. 
HISTORY : , The patient is an 86 - year - old woman with a history of aortic valve replacement in the past with paroxysmal atrial fibrillation who was admitted yesterday with the recurrence of such in a setting of hypokalemia , incomplete compliance with obstructive sleep apnea therapy with CPAP , chocolate / caffeine ingestion and significant mental stress .