Concurrent Myocardial Bridging and Coronary Artery Disease: A Study of an Iranian Population

Danial  Chaleshi; Fahime  Samadi; Amir Ali  Ghaemi; Negin   Parsa; Aysan  Zareiye; Mahmood Reza  Motamedzadeh; Mohammadtaghi  Sarebanhassanabadi; Hossein  Nough

doi:10.18502/jthc.v19i3.16864

Danial Chaleshi Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Fahime Samadi Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Amir Ali Ghaemi Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Negin Parsa Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Aysan Zareiye Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Mahmood Reza Motamedzadeh Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Mohammadtaghi Sarebanhassanabadi Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Hossein Nough Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

DOI: https://doi.org/10.18502/jthc.v19i3.16864

Keywords: Myocardial bridging; Acute coronary syndrome; Angiography

Abstract

Background: Myocardial bridging (MB) has been associated with acute coronary syndrome, ischemia, arrhythmia, and even sudden death. This study investigated the prevalence of MB and its complications and manifestations.

Methods: This cross-sectional study was conducted on symptomatic coronary patients who underwent angiography between March 2022 and March 2023 at Afshar or Shahid Sadoughi hospitals in Yazd, Iran. The angiographic reports of all patients were evaluated. Cases with MB were selected, and their angiographic films were assessed by an interventional cardiologist for diagnostic accuracy. Baseline, radiological, and clinical characteristics were also evaluated. Data were collected and analyzed using SPSS, version 20.0. The dependent variable was stratified based on independent variables using the χ²test.

Results: Out of 3750 symptomatic patients, 165 (4.4%) were diagnosed with MB. Among these, 111 (67.3%) were male, and the mean age was 56.87±10.06 years. A total of 152 patients had MB in the left anterior descending artery, representing the highest occurrence proportion at 92.1%. The most common types of coronary artery disease (CAD) diagnosed included mono-vessel disease and slow flow, accounting for 35.1% and 25.8%, respectively. There was no significant frequency distribution of CAD co-occurrence based on baseline and radiological features (P>0.050).

Conclusion: This study provides valuable insights into the prevalence of MB in Iran and its co-occurrence with CAD. While some findings align with previous research, certain discrepancies warrant further investigation.