Correlation Analysis Between Coronary Artery Calcification And Stenosis

Objective: To investigate the relationship between coronary artery calcification (CAC) and stenosis and on the value of CAC for diagnosing coronary heart disease (CHD). Methods: 591 in-patients were recorded their history and clinical index and examined by selective coronary angiography. The calcification and stenosis of 7092 coronary artery segments was assessed and compared. Results: logistic regression: The CAC correlative factor is age (P=0.000) and lipoprotein (a) (P=0.017). Age and lipoprotein (a) were risk factor of CAC. The coronary artery stenosis correlative factor is age (P=0.000), smoking (P=0.007) and high density lipoprotein (HDL) (P=0.000). Age and smoking were risk factors of coronary artery stenosis. HDL was protection factor of coronary artery stenosis. 259 patients were detected CAC. The total CAC rate was 43.82%. Before 60 years, the CAC rate was higher in men than women, but from 60, the women's CAC rate was rapidly increased and surpassed men's. Predilection site of CAC was left anterior descending branch (LAD) proximal segment (192), LAD middle segment (87). 433 patients were discover stenosis. In different age groups, the men's coronary artery stenosis rate were higher than women's. There was often found stenosis in LAD proximal segment (296), right coronary artery (RCA) proximal segment (118). The patients with coronary heart disease had higher CAC rate (52.19%) than normal people (20.25%). They were different in CAC range and degree. Conclusions: The risk factors were different in somedegree between CAC and stenosis. After 60 years, there had a rapidly increase phenomenon of the women's CAC rate. In lesion's site, range and degree, CAC and stenosis had some correlation. But the diagnosis of CHD can not be determined by CAC.