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CASE REPORT article

Front. Cardiovasc. Med.
Sec. Cardiac Rhythmology
Volume 11 - 2024 | doi: 10.3389/fcvm.2024.1391047

Left bundle branch pacing in third-degree atrioventricular block following Morrow surgery: A case report

Provisionally accepted
Keqiang Huang Keqiang Huang Hongmei Gan Hongmei Gan *Jingjing Jiang Jingjing Jiang *Cheng Tang Cheng Tang *
  • Wuhan Asia General Hospital, Wuhan, China

The final, formatted version of the article will be published soon.

    Left bundle branch pacing (LBBP) has proven to be an alternative method for delivering physiological pacing to achieve electrical synchrony of the left ventricle (LV), especially in patients with atrioventricular block and left bundle branch block (LBBB). However, it is unclear whether it still achieved in patients whose left bundle branch (LBB) has had surgery-induced damage. The Morrow operation (Morrow septal myectomy) is regarded as one of the most effective treatments for hypertrophic obstructive cardiomyopathy (HOCM). The surgery resects small sections of muscle tissue in the proximal ventricular septum nearby or contains the LBB, which means that physical damage to the LBB is almost inevitable. Approximately 2%-12% of patients may need pacemaker implanted after Morrow surgery. LBBP is a feasible and effective method for achieving electric resynchronization of LBBB compared to right ventricular pacing (RVB). Nevertheless, there is a dearth of data on LBBP in third-degree atrioventricular block (AVB) following Morrow surgery. We report a case of successful LBBP in those patients.

    Keywords: left bundle area pacing, Left bundle block, Morrow, septal myectomy, pacemaker

    Received: 24 Feb 2024; Accepted: 11 Jul 2024.

    Copyright: © 2024 Huang, Gan, Jiang and Tang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Hongmei Gan, Wuhan Asia General Hospital, Wuhan, China
    Jingjing Jiang, Wuhan Asia General Hospital, Wuhan, China
    Cheng Tang, Wuhan Asia General Hospital, Wuhan, China

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