title: Lipids and lipoproteins in patients undergoing coronary-artery surgery.
abstract: Fasting blood samples were obtained from 290 patients who were undergoing elective coronary-artery graft procedures, and cholesterol, triglyceride and high-density lipoprotein cholesterol levels were measured. The 1983 National Heart Foundation of Australia's Risk Factor Prevalence Study was used as a source of age- and sex-matched "control" data. Of these patients, 80% had cholesterol levels of greater than 5.5 mmol/L; in 55% of patients, the level exceeded 6.5 mmol/L. Only 4% of patients who received a graft showed hypertriglyceridaemia alone (triglyceride level, greater than 2 mmol/L). Combined hyperlipidaemia (cholesterol level, greater than 5.5 mmol/L and triglyceride level, greater than 2.0 mmol/L) was present in 52% of subjects. Low-density lipoprotein cholesterol levels exceeded 3.5 mmol/L in 69% of men and in 71% of women. In terms of five 10-year age intervals, mean plasma triglyceride and cholesterol levels were elevated significantly in patients who had undergone a coronary-artery grafting procedure compared with those of subjects in the National Heart Foundation study. The mean high-density lipoprotein cholesterol levels were markedly-lower compared with those of the subjects in the National Heart Foundation study. Of those patients whose plasma cholesterol levels were less than 5.5 mmol/L, 97% of patients had high-density lipoprotein cholesterol levels that were less than the mean level for subjects in the National Heart Foundation study. Thus, a very-high proportion of patients who underwent coronary-artery bypass surgery had lipid abnormalities which required intervention postoperatively.
authors.affiliation: Department of Chemical Pathology, St Vincent's Hospital, Fitzroy, VIC.
authors.forename: T
authors.initials: T
authors.lastname: Billington
authors.forename: E D
authors.initials: ED
authors.lastname: Janus
authors.forename: H C
authors.initials: HC
authors.lastname: Sinclair
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001581:Benzothiadiazines; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000097:blood* / Q000188:drug therapy / Q000601:surgery; D004232:Diuretics; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008055:Lipids / Q000097:blood*; D008074:Lipoproteins / Q000097:blood*; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D049993:Sodium Chloride Symporter Inhibitors / Q000627:therapeutic use; D014280:Triglycerides / Q000097:blood
chemical_list: D000319:Adrenergic beta-Antagonists; D001581:Benzothiadiazines; D008076:Cholesterol, HDL; D004232:Diuretics; D008055:Lipids; D008074:Lipoproteins; D049993:Sodium Chloride Symporter Inhibitors; D014280:Triglycerides; D002784:Cholesterol