Clinical Analysis Of Patients With 64-slice Spiral CT Coronary Angiography For Myocardial Bridging

Objective:To investigate the clinical datas of myocardial bridging patients and normal coronary patients diagnosed by 64-slice spiral CT coronary angiography, acknowledge morphology characteristics of myocardial bridge, analysis the related factors with the discrepancy between the myocardial bridging patients and the normal coronary patients.Methods:A total of 30 myocardial bridging patients who diagnosed by 64-slice spiral CT coronary angiography have involved in this study called myocardial bridging group, acknowledge the morphology characteristics of myocardial bridge by the location and depth. Select another 27 normal coronary patients used the same diagnose method in the same yearcalled normal coronary group. Observation targets in two groups include gender、age、BMI, hypertension, diabetes, high cholesterol, smoking,fasting blood glucose (FBG),high density lipoprotein cholesterol ( HDL-C),low density lipoprotein cholesterol (LDL-C),triglycerides (TG), creatinine ( CRE),hemoglobin concentration (HB),platelet count (PLT),mean platelet volume (MPV ),compare the two groups of the above indexes in statistical analysis.Results:1.30 myocardial bridging patients have diagnosed 38 myocardial bridges.Most myocardial bridges location in the middle segment of left anterior descending coronary artery (19,50%) ,then the left circumflex coronary artery (6,15.79%) and diagonal branch (4,10.53%) ,obtuse marginal branch (4,10.53%),right coronary artery (2,5.26%),the proximal segment of left anterior descending coronary artery (2,5.26%),the distal segment of left anterior descending coronary artery (1,2.63%).the superfical type was the most observed (16,42.1% ),the deep type was less (2,5.26%)2.Compared between myocardial bridging group and normal coronary group,the differences in the MPV (mean platelet volume) have statistical significance (P<0.05),the differences in gender, age, BMI, hypertension, diabetes, high cholesterol, smoking, FBG, HDL-C, LDL-C, TG, CRE, HB, PLT have no statistical significance (P>0.05)3.The myocardial group has diagnosed 9 atherosclerotic plaques,the normal coronary group has diagnosed 2 local atherosclerotic plaques, the differences between two groups have statistical significance (P=0.031,P<0.05).The MPV value was higher in the myocardial bridging group (10.97±1.13vs10.34±0.89,P=0.024)Conclusions:1.Myocardial bridging often occurs in the location of the middle segment of the left anterior descending coronary artery, the superfical type was the most observed.The 64-slice spiral CT coronary angiography can be used excellently for dignose myocardial bridging and display the morphology features.2.The myocardial bridge was no significantly predicted by traditional coronary risk factors.3. The elevation of the MPV value is an important atherosclerotic risk factor in myocardial bridging patients.