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Recovery of complete left bundle branch block following heart failure improvement by left bundle branch pacing in a patient
Author(s) -
Li Yuqiu,
Chen Keping,
Dai Yan,
Li Chao,
Sun Qi,
Chen Ruohan,
Yan Lirong,
Lin Jinxuan,
Zhang Shu
Publication year - 2019
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.14034
Subject(s) - left bundle branch block , medicine , cardiology , cardiac resynchronization therapy , heart failure , qrs complex , bundle branch block , bundle , heart rate , electrical conduction system of the heart , electrocardiography , ejection fraction , blood pressure , materials science , composite material
A 57‐year‐old male presented with symptomatic systolic heart failure and complete left bundle branch block (LBBB). Left bundle branch pacing corrected LBBB at a low capture threshold (0.5V @0.4ms) with right bundle branch conduction delay and paced QRS morphology changed to near‐normal by adjusting AV delay with diminished RBBD. At 1‐year follow‐up, the patient had a significant improvement in heart failure and LBBB automatically resolved with a rate‐dependent pattern. LBBP may be an alternative to conventional cardiac resynchronization therapy with the likelihood of recovery of LBBB. More research is needed to evaluate the potential use of this pacing strategy in patients with LBBB and heart failure.