5%) patient had tight muscle bridge on the left anterior descending (LAD) artery.
Tight muscle bridge on the LAD and a systolic###One###1.
Some have advocated that, by careful review of the coronary angiograms, for the specific purpose of identifying the muscle bridge, there would be a higher incidence of myocardial bridging (5).
also showed a high incidence of atherosclerotic plaque proximal to the area of the muscle bridge (3).
Acute myocardial infarct caused by a muscle bridge of the anterior interventricular ramus: complicated course with vascular perforation after stent implantation Z Kardiol 1997; 86: 630-8.
Stent procedure complicated by thrombus formation distal to the lesion within a muscle bridge.
were observed in the majority of cases (32%), but none of these cases presented with signs, symptoms, or complications attributable to this anomaly, for which they were considered benign.
Myocardial bridges were found in 14 hearts (47%); about these, there were in 9 hearts (30%) muscle bridges
only above the anterior interventricular artery; in 3 cases (10%) simultaniously over anterior interventricular artery and afluents of the anterior interventricular vein; in 1 heart (3%), it ocurred over left ventricular branches of the posterior interventricular artery and vein and in 1 heart (3%) over anterior ventricular branch of the right coronary artery.
The reported rate of angiographic bridging is less than 5% while rate of muscle bridges
is up to 86% in autopsy case studies1,2.
are more common in men than in women and tend to affect patients in their fourth decade of life (1).