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Serum lipids in angiographically assessed coronary atherosclerosis.

Cholesterol, triglycerides, and Lp(a)/pre-beta1 lipoprotein were analyzed in 153 patients typed for liproprotien patterns. Coronary atherosclerosis was determined by selective coronary angiography and graded by a system taking into account proximal, middle and distal segments. Smoking habits, family history and hypertension were also recorded. Normal coronary arteries were encountered in 45, moderate coronary atherosclerosis (less than median score) in 50, and severe changes (greater than median score) in 58 patients. Cholesterol (P less than 0.05), positivity of Lp (a)/pre-beta1 lipoprotein (P less than 0.01), a family history of coronary heart disease (P less than 0.05), and smoking (P less than 0.01) differed between the group of normal arteries and the whole group of luminal obstructions. Serum triglycerides were not associated with coronary atherosclerosis. Cholesterol, positivity of the Lp(a)/pre-beta1 lipoprotein and a family history of coronary heart disease were also associated with the severity of the disease. Smoking was less prevalent in the group with severe changes.