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Myocardial bridge: evaluation on MDCT

Abdel-Rauf Zeina1, Majed Odeh, Jorge Blinder

  • 1Department of Radiology and MAR Imaging Institute, Bnai Zion Medical Center, 47, Golomb St., P.O.B. 4940, Haifa, Israel. raufzeina3@hotmail.com

AJR. American Journal of Roentgenology
|March 23, 2007
PubMed

Insights

Myocardial bridges are linked to atherosclerosis development in adjacent coronary arteries. This finding suggests myocardial bridges may be an anatomical risk factor for coronary artery disease (CAD).

Area of Science:

  • Cardiovascular Medicine
  • Radiology
  • Pathology

Background:

  • The relationship between myocardial bridges and atherosclerosis is debated.
  • Myocardial bridges are congenital anomalies where a segment of coronary artery travels through heart muscle.

Purpose of the Study:

  • To investigate the association between myocardial bridges and atheromatous coronary artery disease (CAD).

Main Methods:

  • Coronary CT angiography (CTA) was performed on 300 subjects.
  • Prevalence, characteristics, and atheromatous changes of myocardial bridges were assessed.
  • Subjects with myocardial bridges were compared to a control group without bridges.

Main Results:

  • 26% of subjects had a myocardial bridge, most commonly in the mid left anterior descending artery (LAD).
  • Myocardial bridge presence was significantly associated with more atheromatous changes proximal to the bridge in the LAD.
  • Stenosis severity correlated with myocardial bridge thickness and length.

Conclusions:

  • Myocardial bridges predispose to atherosclerosis in the proximal coronary artery segment.
  • Myocardial bridges should be considered an anatomical risk factor in CAD evaluation.
Abstract

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