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      [The role of low-molecular-weight heparin in unstable angina, acute myocardial infarction and post-elective percutaneous transluminal coronary angioplasty].

      Arquivos Brasileiros de Cardiologia
      Angina, Unstable, complications, drug therapy, mortality, Angioplasty, Balloon, Coronary, adverse effects, Female, Fibrinolytic Agents, therapeutic use, Heparin, Heparin, Low-Molecular-Weight, Humans, Infusions, Intravenous, Injections, Subcutaneous, Male, Middle Aged, Myocardial Infarction

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          Abstract

          To evaluate the clinical efficacy and safety of subcutaneous (SC) low molecular weight heparin (LMWH) compared to intravenous (IV) non fractioned heparin (NFH) in unstable angina, acute myocardial infarction and post-percutaneous transluminal coronary angioplasty. From September/92 to April/94, 314 patients were randomized in two groups. Group I-- 154 patients treated with SC LMWH, using in the 1st phase SC LMWH with a dosage of 160 UaXa IC/kg/day (group IA--92 patients), and in the 2nd, a dosage of 320 UaXa IC/kg/day (group IB--62 patients). Group II--160 patients treated with IV NFH 100UI/kg (bolus), followed by 1000UI/h with adjusted dosage by activated partial thromboplastin time. There was not a statistically significant difference among the three groups in relation to cardiac events, hemorrhagic complications and deaths. The clinical efficacy and safety of SC LMWH in patients with unstable angina, acute myocardial infarction and post-percutaneous transluminal coronary angioplasty were similar to IV NFH with the dosages used in this study.

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