RESUMEN
Introduction: In order to schedule the treatment and preventive measures for coronary artery disease, it is necessary to have new evolving informations about epidemiological, clinical, paraclinical and risk factor aspects of myocardial infarction. This study was conducted to provide such new informations about the characteristics of MI in Yazd during 2 years [1998-1999]
Methods and Materials: This study was descriptive and cross-sectional. It was carried out regarding to all cases of MI registered in five CCU in Yazd. Quantitative variables included age, sex, frequency of previous admissions, time interval between the onset of chest pain and CCU admission, clinical manifestations, Killip classification, mortality rates, streptokinase administration and the financial burden during hospital stay
Results: During two years, totally 1071 patients were admitted at CCU among whom 362 were females [33.7%] and 710 were males [66.3%]. The average age for men was 59.64 years old, while it was 66 years old for women. In-hospital mortality rate was 9.1% [17.5% among females and 4.8% among males]. The average age of those who died was 69 years old and of those who survived was 61 years old. 53.3% of patients reached CCU before six hours of the onset of chest pain. 444 patients [46.3%] received streptokinase. 6.8% of those who received streptokinase and 11.2% of those who did not receive streptokinase died during hospital stay [P.Value=0.014]. Clinical manifestation such as chest pain, dyspnea, sweating and nausea with vomiting existed in 90%, 17%, 55% and 40% of cases, respectively
Conclusion: This study indicates that age, Killip class and the duration between pain onset and streptokinase administration are important predictors of in-hospital death in MI patients. It seems that patient education about alarm signs is required. This study may be an introduction for a MI Registration System in Yazd