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Clinical characteristics and factors associated with coronary stenosis proximal to a myocardial bridge: a

Wen Gao1, Jiaxi Zhang2, Fei Duan3

  • 1First Department of Cardiology, Bayannaoer City Hospital, No. 98 Wulan Buhe Road, Linhe District, Bayannaoer City, 015000, Inner Mongolia Autonomous Region, China.

BMC Cardiovascular Disorders
|August 16, 2020
PubMed

Insights

Myocardial bridges (MB) in the middle or distal left anterior descending artery (LAD) are independently linked to coronary stenosis. This finding clarifies risk factors for patients with MB and cardiovascular symptoms.

Area of Science:

  • Cardiology
  • Vascular Biology
  • Medical Imaging

Background:

  • The relationship between myocardial bridges (MB) and cardiovascular risk factors is not well understood.
  • Investigating the clinical characteristics and associated factors of coronary stenosis near MB is crucial.

Purpose of the Study:

  • To explore the clinical characteristics of coronary stenosis proximal to myocardial bridges.
  • To identify factors associated with coronary stenosis in patients with MB.

Main Methods:

  • Retrospective study of 244 patients with MB and cardiovascular symptoms undergoing selective coronary angiography (SCAG).
  • Patients were categorized into non-stenosis and stenosis groups based on coronary stenosis presence proximal to MB.
  • Multivariable analysis was used to identify independent risk factors.

Main Results:

  • 91 patients (37.3%) had stenosis proximal to MB.
  • The stenosis group had a higher proportion of males and smokers compared to the non-stenosis group.
  • MB located in the middle distal or distal LAD was independently associated with coronary stenosis proximal to MB (OR=0.439, P=0.002).

Conclusions:

  • Myocardial bridges located in the middle distal or distal LAD are independently associated with coronary stenosis.
  • This finding helps in understanding the specific anatomical locations of MB that increase cardiovascular risk.
Abstract

Keywords:
Cardiovascular riskLeft anterior descending arteryMyocardial bridgingStenosis

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