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  • Title: [ln-hospital mortality after ST-segment elevation myocardial infarction according to reperfusion therapy].
    Author: Prieto JC, Sanhueza C, Martínez N, Nazzal C, Corbalán R, Cavada G, Lanas F, Bartolucci J, Campos P, Grupo de Estudio Multicéntro del Infarto.
    Journal: Rev Med Chil; 2008 Feb; 136(2):143-50. PubMed ID: 18483666.
    Abstract:
    BACKGROUND: Primary angioplasty is considered the best reperfusion therapy in the treatment of ST-segment elevation myocardial infarction (STEMI). However, thrombolysis is the reperfusion method most commonly used, due to its wide availability, reduced costs and ease of administration. AIM: To compare in-hospital mortality in STEMI patients according to reperfusion therapy. MATERIAL AND METHODS: Patients admitted to Chilean hospitals participating in the GEMI network, from 2001 to 2005, with STEMI were included. They were divided in three groups: a) treated with thrombolytics, b) treated with primary angioplasty, c) without reperfusion procedure. In-hospital mortality according to gender, was analyzed in each group, using a logistic regression method, to assess risk factors associated with mortality. RESULTS: We included 3,255 patients. Global mortality was 9.9% (7.5% in men and 16.7% in women, p<0.001). Mortality in patients treated with thrombolytics, was 10.2% (7.6% in men and 18.7% in women, p<0.01). The figure for patients treated with primary angioplasty, was 4.7% (2.5% in men and 13% in women, p<0.01), and in patients without reperfusion, was 11.6% (9.8% in men and in 15.4% women, p<0.01). In each group women were older, had a higher prevalence of hypertension and a higher percentage of Killip 3-4 infarctions. Logistic regression showed that angioplasty, compared with no reperfusion, was associated with a reduced mortality only in men. The use of thrombolytics in women was associated with a higher mortality. CONCLUSIONS: Primary angioplasty was the reperfusion therapy associated to the lower mortality in STEMI. Use of thrombolytics in women was associated with a higher mortality rate than in non reperfused women.
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