Correlation between carotid atherosclerosis stenotic severity and myocardial infarction size assessed by carotid color ultrasonography / 心血管康复医学杂志

ABSTRACT

Objective:To study correlation between carotid atherosclerosis(AS)stenotic severity and myocardial infarction(MI)size assessed by carotid color ultrasonography.Methods:According to infarction size,a total of 180 MI patients trea-ted in our hospital were divided into focal necrosis group(n=92),small-medium size infarction group(n=45)and large size infarction group(n=43).Carotid artery stenosis,peak systolic flow velocity(PSV),end diastolic flow velocity(EDV),number of AS plaques and MI location were compared among all group.And correlation between carotid AS ste-notic severity and MI size was analyzed.Results:Compared with focal necrosis group,there were significant reductions in PSV[(101.43±23.16)cm/s vs.(154.35±65.73)cm/s vs.(325.19±105.27)cm/s]and EDV[(34.19±19.36)cm/s vs.(77.13±20.61)cm/s vs.(138.41±84.93)cm/s]in small-medium size infarction group and large size infarction group,and above indexes of large size infarction group were significantly higher than those of small-medium size infarction group(P=0.001 all).Compared with focal necrosis group and small-medium size infarction group,there were significant rise in percentages of severe carotid stenosis(4.35%,11.11%vs.37.27%),occlusion(1.09%,4.44%vs.27.91%),number of atherosclerotic plaque＞2(38.04%,40.00%vs.65.12%)and anterior infarction(32.61%,35.56%vs.69.77%),and significant reduction in percentage of posterior infarction(48.91%,44.44%vs.23.26%)in large size infarction group(P＜0.05 or＜0.01).Spearman correlation analysis indicated that carotid AS stenotic severity was significant positively cor-related with MI size(r=0.733,P=0.001).Conclusion:Incidence rates of severe carotid stenosis and occlusion are higher in patients with large size myocardial infarction.Carotid AS stenotic severity is significant positively correlated with myo-cardial infarction size,which possesses certain application value in detecting myocardial infarction.