Unstable angina

pp. 577-592

Abstract

Having analyzed a series of variables that included clinical presentation, history of angina, electrocardiographic abnormalities and response to medical treatment, we have defined each form of clinical presentation and their respective prognosis . Patients with ST- segment depression on electrocardiographic during chest pain have higher survival rates than those with ST-segment
elevation (82% vs 70°%°) . The patients having ST-segment elevation are usually younger, with new onset angina as the most frequent clinical presentation form . This group has a greater risk for inhospital acute myocardial infarction, and a low acute myocardial infarction incidence and mortality rates at follow-up . Those having ST-segment depression are usually older patients, and in most cases present clinically as progressive angina. A history of chronic stable angina and acute myocardial infarction are frequently present. They have higher inhospital and follow-up mortality rates.