His-purkinje system pacing improves cardiac performances in patients with AF
To date, the majority of randomized controlled trials and recommendation of current guidelines for CRT upgrades focus on the patients with PICM and sinus rhythm. The biventricular pacing upgrade is still not the optimal recommendation (IIb) in recent guidelines. The efficacy of CRT upgrade was unfavorable in patients with AF due to the potential reduces of biventricular pacing percentage [16,17]. Quite different with those study, In our study, 62% patients were AF and they had similar clinical responses with the patients with sinus rhythm. For the patients dependent on ventricular pacing, HBP would be the optimal choice? We still need more evidence in future studies.