PO-02-013 EFFICACY OF LEFT BUNDLE BRANCH PACING IN PATIENTS WITH DIFFERENT LEFT BUNDLE BRANCH BLOCK MORPHOLOGIES
نویسندگان
چکیده
Left bundle branch pacing (LBBP) is a novel technique to deliver cardiac resynchronization therapy (CRT) by correcting intrinsic LBBB achieve electrical and mechanical resynchrony. Whether the efficacy of LBBP different across morphologies has not been reported. To explore in patients with morphologies. Consecutive who received due either heart failure (HF) or atrioventricular block accompanied pattern escape rhythm were recruited. The changes QRS duration (ΔQRSd) left ventricular activation time (ΔLVAT) compared before after LBBP. Relationships ΔQRSd ΔLVAT function HF also explored. followed up for at least 6 months. Electrical resynchrony based on 4 major morphological criteria. Comparison 1: meeting Strauss criteria vs not; 2: presence q wave lead I aVL 3: QS rS morphology V1; 4: S V6 not. A total 82 enrolled from January 2018 August 2022. In 1, 59 had 23 Patients greater reduction QRSd (56.95±24.10ms 36.83±32.16ms, P<0.05) LVAT (56.47±14.90ms 41.52±17.13ms, P<0.001). Forty-two met LVEF improvement (19.92±6.89% 12.41±13.10%, those included 61 without these exhibited better synchrony (ΔQRSd: -55.18±24.79ms -40.05±33.67ms, P<0.05; ΔLVAT: -55.74±14.70ms -41.67±18.55ms, than V6. Among them, 51 showed improvements (ΔLVEF: 18.65±10.13% 6.61±7.78%, P<0.05). Correlation analyses significant associations between both (R=0.55, P <0.001) (R=0.39, <0.01) improvement. multivariate analysis, ΔQRSd>53 ms an independent predictor super response (LVEF improvement>15%). absence can predict
منابع مشابه
Left Bundle Branch Block
Coronary angiography, cine left ventriculography, and the cardiovascular hemodynamics of 24 patients with left bundle branch block were studied. Seven patients were found to have significant coronary artery disease, always severe. Five had cardiomyopathy and seven had valvular disease. Only those with coronary artery disease or cardiomyopathy had abnormal left ventricular contraction patterns. ...
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ژورنال
عنوان ژورنال: Heart Rhythm
سال: 2023
ISSN: ['1556-3871', '1547-5271']
DOI: https://doi.org/10.1016/j.hrthm.2023.03.819