Implication of Apnea‐Hypopnea Index, a Measure of Obstructive Sleep Apnea Severity, for Atrial Fibrillation in Patients With Hypertrophic Cardiomyopathy

Background Obstructive sleep apnea ( OSA ) is common and independently associated with atrial fibrillation ( AF ) in patients with hypertrophic cardiomyopathy ( HCM ). This study aimed to investigate the relationship between apnea‐hypopnea index ( AHI ), a measure of OSA severity, and prevalence of AF in a large series of patients with HCM. Methods and Results A total of 555 patients with HCM who underwent sleep evaluations were retrospectively...