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Revista Colombiana de Cardiología
Print version ISSN 0120-5633
Abstract
LOPEZ, Nilson; TENORIO, Carlos and FRANCO, Gloria. Clinical characteristics and one year prognosis of patients with acute coronary syndrome without ST segment elevation and normal coronary arteries. Rev. Colomb. Cardiol. [online]. 2011, vol.18, n.6, pp.316-323. ISSN 0120-5633.
Objective: to describe the clinical characteristics and prognosis of patients with acute myocardial infarction without ST-segment elevation and normal coronary arteries. Results: each cohort consisted of 24 patients. The group of patients without coronary disease was younger (56 ± 10 years vs. 63 ± 10 years, p = 0.026) and had more women (62% vs. 29%, p = 0.02). The TIMI risk score was higher in the group with coronary heart disease (3.3 vs. 2.5, p = 0.02); however, it did not result into earlier coronary angiography (without coronary disease 19 ± 18 hours, vs. with coronary artery disease 27 ± 21 hours, p = 0.18). The number of diseased vessels in patients with coronary artery disease was 1.6 and 2.04 stents were implanted on average; in 75% of cases these were not medicated. Hospital stay was significantly higher in the group with coronary heart disease (3.5 ± 1.7 vs. 2.3 ± 1.1, p = 0.01). Patients without coronary artery disease showed better ejection fraction (0.57 ± 0.06 vs. 0.50 ± 0.12) and lower number of segmental defects of contractility (8 vs. 15 patients, p = 0.03). There were no differences in mortality from cardiovascular causes (1 case with coronary artery disease; without coronary disease 0 cases), need for new coronary angiography (1 patient with coronary artery disease, without coronary disease 0 cases), and rehospitalization due to chest pain (6 cases in both groups). Conclusions: the probability of rehospitalization for chest pain, need for new coronary angiography and death did not differ between patients with infarction without ST-segment elevation with or without obstructive coronary disease.
Keywords : angina; unstable/epidemiology; coronary angiography; coronary artery disease/epidemiology; coronary artery disease/radiography; follow-up studies; myocardial infarction/epidemiology; outcome and process assessment (health care); prognosis; risk assessment.