
pmid: 40178725
Atrioventricular node ablation (AVNA) and pacemaker implantation enhance prognosis in heart failure patients experiencing rapid ventricular response due to atrial fibrillation. This meta-analysis assessed the clinical benefits of various pacing modalities following AVNA.The electrophysiological endpoint was defined as QRS duration, while the echocardiographic endpoint was the change in left ventricular ejection fraction. Secondary endpoints included pacing threshold, mortality rates, and improvements in the 6-min walk test.This meta-analysis of 13 studies involving 1257 patients suggested that His bundle pacing (HBP) and left bundle branch area pacing (LBBAP) conferred an advantage in narrowing QRS duration compared to biventricular pacing (BVP) (HBP vs BVP OR = - 59.05, 95%CI = - 73.12 to - 44.97; LBBAP vs BVP OR = - 48.64, 95%CI = - 64.05 to - 33.24). The findings of echocardiographic endpoints suggested that LBBAP and HBP emerged as the optimal strategies over RVP (vs HBP OR = - 7.59, 95%CI = - 11.85 to - 3.32; vs LBBAP OR = - 6.58, 95%CI = - 12.08 to - 1.07). LBBAP reduced all-cause mortality compared to BVP (OR = 0.10, 95%CI = 0.01-0.78); however, no significant differences in all-cause mortality were observed between LBBAP and HBP. The pacing threshold of LBBAP was significantly lower than HBP (OR = - 0.40, 95%CI = - 0.57 to - 0.23).LBBAP not only demonstrated superior clinical outcomes regarding mortality compared to ventricular pacing strategies, but also was associated with a lower pacing threshold than HBP, thereby indicating its potential advantage over HBP in patients undergoing AVNA and subsequent pacemaker implantation.
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