The age range from 52 to 69 years. The clinical characteristics of the patients in the two groups are shown in Table 2. When multivariate analysis was used to predict the relationship between coronary risk factors and multivessel disease. It might be due to higher selective patients who had severe coronary artery diseases than. Significant ST-T change on ECG was related to presence of significant coronary artery disease, and multiple leads changing was related to multiple vessel disease.
Hypertension is variable that related to multivessel disease.
In chronic hypertension with left ventricular hypertrophy, the dense network of intramural capillaries was reduced and narrowed the range of autoregulation , especially in the subendocardium, in which autoregulation was ordinary mor limited than in the subepicardium. When presence of coronary occlusion, especially in multivessel disease, perfusion of the ischemic myocardium was pressure-dependent because coronary collaterals did not exhibit autoregulation. Hypotension from vasodilatation effect to dipyridamole, markedly produced ischemia to extensive collateral dependent segments of myocardium.