期刊
CHEST
卷 122, 期 1, 页码 108-114出版社
AMER COLL CHEST PHYSICIANS
DOI: 10.1378/chest.122.1.108
关键词
economics; enoxaparin; low-molecular-weight heparin; managed care; outpatient treatment; pharmacoeconomic evaluation; proximal deep vein thrombosis; utilization
Objectives: A landmark Canadian randomized controlled clinical trial compared treatment of acute proximal vein thrombosis via low-molecular-weight heparin (LMWH) [enoxapatin] administered primarily at home with IV unfractionated heparin (UH) in the hospital. Results demonstrated equivalent safety and efficacy for home care with enoxaparin with a reduction in cost. Our objective was to validate these findings in the routine practice setting of a US health maintenance organization. Design: Retrospective analysis of medical and administrative records of health-plan members meeting inclusion-exclusion criteria of the Canadian trial during the period from 1995 to 1998. Setting: Staff-model health maintenance organization serving New Mexico. Patients: Persons presenting as outpatients from 1995 to 1996 or from 1997 to 1998 with acute, proximal deep vein thrombosis (DVT) diagnosed by duplex ultrasonography. Interventions: Initial anticoagulant therapy of IV UH administered in the hospital (from 1995 to 1996 group, n = 64) or subcutaneous LMWH (enoxaparin) administered primarily, at home (from 11997 to 1998 group, n = 65), followed by warfarin therapy. Results: No statistically significant differences were observed in the number of recurrent venous thromboembolic events (p = 0.36) or bleeding events (p = 1.0). Mean +/- SD cost per patient was $9,347 +/- 8,469 in the enoxaparin group compared with $11,930 +/- 10,892 in the UH group, a difference of - $2,583 (95% bootstrap-adjusted asymmetrical confidence interval, -$ 6,147, +$650). Conclusions: Retrospective replication of the Canadian study in a US routine (managed) care setting found similar clinical and economic outcomes. Treatment of acute proximal DVT with enoxaparin in a primarily Outpatient setting can be accomplished safely and yields savings through avoidance or minimization of inpatient stays.
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