Immediate impact of positive airway pressure on atrial fibrillation

A 63-year old male with recently diagnosed paroxysmal atrial fibrillation (AF) was evaluated for suspected sleep-disordered breathing (SDB). Sleep history was positive for loud snoring, infrequent snort arousals and an inability to extend sleep duration beyond 6-6.5 hours. Epworth Sleepiness Scale score was 7/24. He was on diltiazem 120 mg daily. Past medical history included impaired fasting glucose, diverticulitis, gastroesophageal reflux disease and nonalcoholic fatty liver disease. He was a nonsmoker and did not endorse recreational drug or excessive caffeine/alcohol use.

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