A total of 245 patients with non-ST-elevation acute coronary syndrome were enrolled to the study. Based on the GRACE risk score classification system, the patients were divided into low- (n = 97, 39.6%), intermediate- (n = 84, 34.3%), and high- (n = 64, 26.1%) risk groups. All patients underwent coronary angiography within five days after admission.
The Gensini scores were 26 卤 29 in the low-risk group, 29 卤 19 in the intermediate-risk group, and 38 卤 23 in the high-risk group (p = 0.016). The low-risk group was significantly different from the high-risk group (p = 0.013), and the difference from the intermediate-risk group almost reached significance. Normal, noncritical, one and two, or multivessel disease were identified in 15 (6.1%), 31 (12.7%), 75 (30.6%), and 124 (50.6%) patients, respectively. The prevalence of multivessel disease was 28% in the low-risk group, 30% in the intermediate-risk group, and 42% in the high-risk group. The high-risk group was significantly different from the low-risk group (p < 0.01).
Our study demonstrates that the GRACE score has significant value for assessing the severity and extent of coronary artery stenosis in patients with non-ST-elevation acute coronary syndrome.