Распространённость острого коронарного синдрома среди больных с мышечным мостиком над коронарной артерией

The aim of the present study is to establish Acute Coronary Syndrome (ACS) incidence rate in Myocardial Bridge (МB) patients with clear coronary arteries vs. patients with Coronary Artery Atherosclerotic Stenosis (CAAS). According to the materials and findings, within the period 2003-2009, 10298 patients were examined by means of coronary angiography (SAG). It was found that 364 patients had MB: 1st group patients with an isolated MB (IMB) (114 patients); 2nd group patients with MB and Arterial Hypertension (AH) (59patients); 3rd group MB and CAAS (105 patients); 4rd group MB, CAAS and AH (75 patients). No significant difference in the incidence rate of ACS was discovered among patients with IMB and patients with a compound MB. It was proved that cases of Acute Myocardial Infarction (AMI) were more frequent in the group of combined MB and CAAC patients 16/105 patients (15.2%) (p=0.001), as compared to the IМB patients group, cases of Acute Myocardial Infarction were also noted in the МB, CAАS and АH patients group 9/75 patients (12%)(p=0.014 as compared to IMB). The highest incidence rate of cases with IM history was revealed in MB combined with CAАS and АH group of patients 35/75 patients (47%) (p1-4=0.00; p2-4=0.05; p3-4=0.04). Conclusions: 1. MB is an independent cause of Acute Coronary Syndrome development in patients with chest pain syndrome. 2. Among patients with MB, as an option of ACS, acute myocardial infarction is obviously more frequent in CAAS cases. 3. Coronary Artery Bypass Grafting (internal mammary artery) should be considered as a radical therapy in this category of patients.