Beta-blockers, diuretics and physical fitness as determinants of serum lipids in myocardial infarction patients

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Abstract
Serum lipid levels were followed in myocardial infarction patients for one year after the infarction and related to their drug use and physical performance. Serum triglyceride concentrations were significantly elevated in patients using diuretics or diuretics and β-blockers together both 3 and 12 months after the infarction when compared to patients not having drugs. The β-blockers alone did not change triglycerides. No differences were found in total cholesterol concentration between any of the drug groups. The HDL cholesterol levels were significantly lower in all the drug groups 12 months after the infarction in comparison with the group using no drugs, but 3 months after the infarction these differences were not present. Total work in the exercise stress test correlated negatively with serum triglycerides and total cholesterol and positively with HDL/total cholesterol ratio in the group using no drugs 12 months after the infarction. In (3-blocker users, total work correlated negatively with triglyceride and total cholestrol concentrations. In all drug groups no correlation between total work and HDL/total cholesterol ratio could be found. These data suggest that despite differences in the physical working capacity between the groups, the drugs themselves are major determinants of differences in serum lipids.