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Arq. bras. cardiol ; 65(6): 475-478, Dez. 1995.
Article in Portuguese | LILACS | ID: lil-319307

ABSTRACT

PURPOSE: 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. METHODS: 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. RESULTS: There was not a statistically significant difference among the three groups in relation to cardiac events, hemorrhagic complications and deaths. CONCLUSION: 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.


Objetivo - Comparar a eficácia clínica e segurança da heparina de baixo peso molecular (HPBM) subcutânea (SC) à da heparina não fracionada (HNF) intravenosa (IV) na angina instável, infarto agudo do miocárdio (IAM) e pós-angioplastia percutânea transluminal coronária. Métodos - De setembro/92 a abril/94, foram randomizados 314 pacientes, em 2 grupos: grupo 1 com 154 pacientes, tratados com HBPM via SC, usando na 1ª fase a dose de 160 UaXa IC/kg/dia (grupo IA - 92 pacientes) e na 2ª, a dose de 320 UaXalC/kgldia (grupo IB - 62 pacientes); grupo II com 160 pacientes, tratados com HNF via IV, 100UI/kg (bolus), seguido de 1000UI/h, infusão contínua, ajustando-se a dose de acordo como tempo de tromboplastina parcial ativado (TTPa). Resultados - Não houve diferença estatisticamente significante entre os três grupos em relação a eventos cardíacos, complicações hemorrágicas e óbitos. Conclusão - A eficácia clínica e segurança do uso da HBPM SC em pacientes com angina instável, IAM e pós-angioplastia percutânea transluminal coronária foi semelhante à HNF IV com as doses empregadas neste estudo


Subject(s)
Humans , Male , Female , Middle Aged , Heparin, Low-Molecular-Weight , Angina, Unstable/drug therapy , Angioplasty, Balloon, Coronary , Fibrinolytic Agents/therapeutic use , Myocardial Infarction/drug therapy , Heparin , Angina, Unstable/complications , Angina, Unstable/mortality , Angioplasty, Balloon, Coronary/adverse effects , Angioplasty, Balloon, Coronary/mortality , Myocardial Infarction/complications , Myocardial Infarction/mortality , Infusions, Intravenous , Injections, Subcutaneous
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