Effects of passive smoking on fibrinogen and lipids
Passive smoking is considered to be a risk factor for coronary artery disease, possibly as a result of an effect on the concentration of fibrinogen. We investigated the relationship between passive smoking and serum concentrations of fibrinogen and lipids in patients with coronary artery disease and healthy people, by conducting a retrospective case- control study in the university hospitals of Isfahan in 1993. The 168 cases were selected from among patients with acute myocardial infarct, according to the World Health Organization criteria. The control group consisted of200 people living in the neighbourhood of of the case patients and were matched according to age, sex, socioeconomic status and major risk factors for coronary artery disease. The data were gathered at interviews and by measuring plasma fibrinogen, serum total cholesterol, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol after a fasting period. The data were analysed by the chi-squared and t tests.