RT - Journal Article T1 - HEART RATE: A PREDICTOR OF EARLY MORTALITY IN PATIENTS WITH MYOCARDIAL INFARCTION JF - MJIRI YR - 1998 JO - MJIRI VO - 11 IS - 4 UR - http://mjiri.iums.ac.ir/article-1-1069-en.html SP - 295 EP - 298 K1 - heart rate K1 - myocardial infarction K1 - mortality K1 - prognosis K1 - sinus tachycardia K1 - cardiovascular AB - A number of epidemiologic studies have reported a positive relationship between heart rate, cardiovascular disease and mortality. To examine the correlation between heart rate and mortality after acute myocardial infarction (AMI), 2147 patients hospitalized in coronary care units in Isfahan were investigated in a cross-sectional study. Their heart rate was measured according to an electrocardiograph obtained during the 2nd, 5th and final days of hospitalization, and all patients were followed for cardiovascular mortality. The means of3 measurements were divided into four fractions. A strong positive relationship between heart rate and cardiovascular mortality was obtained. Confounding variables such as age, sex, type of infarction and drugs were adjusted by regression models. The nonlinear regression relationship was due primarily to a sharp increase in mortality in the highest quartile of heart rate. We conclude that although sinus tachycardia can be considered as a predictive independent risk factor for mortality after AMI, further longitudinal studies are required. LA eng UL http://mjiri.iums.ac.ir/article-1-1069-en.html M3 ER -