Wilbert S. Aronow, MD, Department of Medicine, Cardiology, Geriatrics, and Pulmonary/Critical Care Divisions, New York Medical College, Valhalla, NY, USA.

Randomized, double-blind, placebo-controlled studies and observational studies have demonstrated that statins reduce mortality and major cardiovascular events among high-risk older adults with hypercholesterolemia. The Heart Protection Study showed that statins reduced mortality and major cardiovascular events in high-risk persons regardless of the initial level of serum lipids, age, or gender. The updated National Cholesterol Education Program (NCEP) III guidelines state that among very high-risk patients a serum LDL cholesterol level of less than 70 mg/dl (1.8 mmol/l) is a reasonable clinical strategy, regardless of age. When a high-risk person has hypertriglyceridemia or low serum HDL cholesterol, consideration can be given to combining a fibrate or nicotinic acid with an LDL cholesterol-lowering drug. For moderately high-risk persons (having two or more risk factors and a 10-year risk for CHD of 10-20%) the serum LDL cholesterol should be reduced to less than 100 mg/dl (2.6 mmol/l). When LDL cholesterol-lowering drug therapy is used to treat high-risk persons or moderately high-risk persons, the serum LDL cholesterol should be reduced at least 30-40%.
Key words: lipids, statins, lipid-lowering drugs, coronary heart disease, atherosclerotic vascular disease, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, triglycerides.

Wilbert S. Aronow, MD, CMD, Clinical Professor of Medicine, Department of Medicine, Divisions of Cardiology and Geriatrics, New York Medical College, Valhalla, NY.

Serum High-Density Lipoprotein Cholesterol
A low serum, high-density lipoprotein (HDL) cholesterol is a risk factor for the development of new coronary events in older men and women.^1-6 In the Framingham Heart Study,¹ in the Established Population for Epidemiologic Studies of the Elderly Study,⁴ and in 2,152 older men and women,³ a low serum HDL cholesterol was a more powerful predictor of new coronary events than was serum total cholesterol. In 1,793 older men and women, mean age 81 years, a decrease of 10 mg/dL (0.26 mmol/L) of serum HDL cholesterol significantly increased by 2.56 times, the probability of having coronary artery disease after controlling for other prognostic variables.² At 48-month follow-up of 1,488 older women, mean age 82 years, and at 40-month follow-up of 664 older men, mean age 80 years, a decrease of 10 mg/dL (0.26 mmol/L) of serum HDL cholesterol significantly increased the relative risk of developing new coronary events by 1.95 times in women and by 1.7 times in men, after controlling for other prognostic variables.