Abstract: Objective To investigate the coronary artery and descending aorta calcification in maintenance hemodialysis patients and normal controls and to analyze the factors of coronary artery calcification in hemodialysis patients. Method All subjects underwent coronary artery and descending aorta CT scan using Philip’s spiral CT and the calcification degree were evaluated by calcification scores. The calcification status of hemodialysis patients and normal controls were compared and the hemodialysis patients were divided into coronary artery calcification group and noncoronary artery calcification group according to the CT scan result. Results There was more severe calcification of coronary artery and descending aorta in hemodialysis patients than that in normal controls. And there were significant differences in A,C reactive protein,albumin, phosphorus、calcium phosphorus product, age and hemodialysis vintage between coronary artery calcification group and non-coronary artery calcification group. Calcification scores was correlated with apo-A. Conclusion Maintenance hemodialysis patients have more probability to have coronary artery calcification than normal controls. The coronary artery calcification of hemodialysis patients had close correlation with age,duration of hemodialysis, infection and calcium phosphate metabolism.

Key words: Coronary artery, Descending aorta, Calcification