Serum Lipoprotein Abnormalities in Patients with Ischaemic Heart Disease: Comparisons with a Control Population

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Abstract
The frequency and nature of abnormalities of serum lipoproteins have been studied, using quantitative techniques, in 143 patients with ischaemic heart disease (I.H.D.). Rigorous selection criteria were used. The findings were related to the distribution of lipoprotein concentrations in a carefully screened control population. Hyperlipoproteinaemia occurred in 55% of patients and in 11 out of 15 patients aged less than 40 years. Raised triglyceride and cholesterol concentrations in very low density lipoprotein were the most frequent abnormalities followed by raised cholesterol content of low density lipoprotein. In young patients high density lipoprotein levels were subnormal. Hyperlipoproteinaemia of W.H.O. types IIa, IIb, III, IV, and V all seemed to be over-represented in I.H.D. I.H.D. patients with type IIa, IIb, and IV abnormalities were all significantly younger than I.H.D. patients with normal lipoprotein levels.