Abstract P85: Are Myocardial Bridges Associated With Increased Risk of Death or Myocardial Infarction?

Background: Myocardial bridging (MB) is frequently seen on coronary CT angiography (CCTA). However, there has been conflicting data on the prognostic value of MB. The aim of this analysis is to determine the prognostic value of MB in patients without obstructive coronary artery disease (CAD) (<50 diameter stenosis). Methods: We included patients with no known prior coronary artery disease (CAD) who underwent CCTA for various clincial reasons. Patients with obstructive CAD on CCTA were excluded. The study cohort was followed for all cause mortality or myocardial infarction (MI) (median follow-up 1.7 years). Group comparisons were made between patients with patients with or without MB. Results: A total of 715 patients were included in this analysis of which 68 patients had MB (10%). 73% of the bridges were in the mid LAD and 22% had bridging in the distal LAD. 48% of the study cohort had normal coronaries, while 52% had evidence of non obstructive CAD. There were no differences in the baseline characteristi...