Plasma lipids and atherosclerosis.

Hyperlipidaemia may be defined as the presence of excess lipid in the blood. It may be classified accord- ing to the nature of the lipids which are increased. A classification of hyperlipidaemia based on the fasting levels of cholesterol and triglyceride allows of three possible abnormal groups, which are shown in table I together with the corresponding classification according to Fredrickson as modified in the World Health Organization Memorandum (1970). The Fredrickson system is based on lipoprotein analyses and has six classes compared Plasma Lipid Group A B C D Cholesterol Normal High Normal High Triglyceride Normal Normal High High