Central sleep apnoea in heart failure with reduced ejection fraction, adaptive servo‐ventilation, and left ventricular ejection fraction: the (still) missing link

This article refers to ‘Adaptive servo-ventilation for central sleep apnoea in systolic heart failure: results of the major substudy of SERVE-HF’ by M.R. Cowie et al., published in this issue on pages 536–544. Moderate-to-severe sleep apnoea [apnoea–hypopnoea index (AHI) ≥15 per hour] is present in up to 50% of patients with heart failure (HF) with reduced (HFrEF) and preserved (HFpEF) ejection fraction.1 Sleep apnoea can cause frequent episodic...