RecruitingDevice studyOptimizing Beta Blocker Dosage in Women While Using the Wearable Cardioverter DefibrillatorThe primary objective of this pilot study is to document the percentage achievement in effective HR control (average nighttime HR \< 70 bpm) during WCD use in a cohort of female patients with cardiomyopathy in an outpatient setting using continuous heart rate (HR) trends data from the WCD to optimize BB/ivabradine dosage, as compared to a prior historical control.