Atrial resynchronization therapy in patients with atrial fibrillation and heart failure with and without systolic left ventricular dysfunction: a pilot study

摘要

Background We examined the long-term (≥?5?years) outcomes of dual-site atrial pacing (DAP) when added to background antiarrhythmic drugs (AADs) and/or ablation in patients with refractory atrial fibrillation (AF) and heart failure (HF). Methods Seventy-three patients with HF (mean NYHA HF class of 2.5) and AF refractory to AADs and/or ablation were implanted with DAP systems to achieve biatrial electrical and mechanical resynchronization (ART) and rhythm control (RC). Results Thirty-eight patients with refractory AF and HF with preserved ejection fraction (HFpEF) and 35 with reduced ejection fraction (HFrEF) were enrolled. HFpEF patients had higher left ventricular ejection fraction compared to HFrEF (53?±?5 vs. 31?±?10% p ?