Prevalence & characteristics of Myocardial Bridging in Patients Subjected to Computed Tomography Coronary Angiography in Iraq.
Kerbala Journal of Medicine,
Volume 9, Issue 1, Pages 2330-2341
ackground: Myocardial bridge occurs when one of the coronary arteries tunnels through the myocardium rather than its normal course at the epicardial fat, so it will be compressed during systole. Myocardial bridging was first recognized at autopsy more than 200 years ago, firstly reported in depth in 1951, and was recognized angiographically in 1960. Computed Tomography Coronary Angiography “CTCA” has been accepted as a reliable noninvasive imaging modality for the diagnosis of MB
Aim of the study: studying the prevalence & characteristic of myocardial bridge among patients Subjected to Computed Tomography Coronary Angiography “CTCA” in Iraq
Subject & methods: The study was conducted on 154 patients examined by CTCA , 110 (72%) was male & 44(28%) was female , between January 2013 till December 2014. distribution of MB patients among age, sex, were identified, types of MB, Bridging characteristics ,Coarse of the bridging within the muscle , Length of the segment of the bridging, Site of the bridging at the main coronary arteries LAD, LCX, RCA, The location of myocardial bridges in the LAD was classified according to segmental involvement as proximal, middle and distal , Associated atherosclerotic among MB patients was estimated.
Result: This study show that myocardial bridging is common congenital anomalies with total prevalence “41.55% “ , more commonly seen in male “70% of patient with MB“ than female “ 30% of patient with MB , with age distribution of 52+-11.4 y, the most frequently involved artery is the LAD (59 patient :92%) & the most frequently involved segment is the mid segment of the LAD “84.37% “, with variable length of the involved segment “(42 +/-17.8 ) mm ,the superficial type is more frequent (56.25%) than the deep (43.75%) & there is increase occurrence of atherosclerosis at the pre bridging segment (94.7%) & less at the post bridging segment (5.26%), while is not observed at the bridging segment itself.
Conclusion: MB is common in Iraqi population; CTCA is useful for detection & characterization of MB & associated atheroscerltic changes
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