1. Evaluation of a Risk-Stratified, Heparin-Based, Obstetric Thromboprophylaxis Protocol
- Author
-
Akila Subramaniam, Elisa T. Bushman, Elizabeth B Ausbeck, Dhong-Jin Kim, Michelle Y. Lu, Martha F. Ruzic, Macie L. Champion, Brian M. Casey, Gabriella D. Cozzi, Jeff M. Szychowski, Kacie R. Oglesby, Sarah A. Dunk, Rodrigo D.D. Muñoz Rogers, Margaret R Page, Mythreyi Mahalingam, Allison J. Lazenby, Alan T.N. Tita, Christina T Blanchard, and Elle R. Kaplan
- Subjects
medicine.medical_specialty ,education.field_of_study ,business.industry ,Obstetrics ,Population ,Obstetrics and Gynecology ,Retrospective cohort study ,Heparin ,Newly diagnosed ,Odds ratio ,Surgical procedures ,Tertiary care ,medicine ,business ,education ,Venous thromboembolism ,medicine.drug - Abstract
Objective To evaluate outcomes before and after implementation of a risk-stratified heparin-based obstetric thromboprophylaxis protocol. Methods We performed a retrospective cohort study of all patients who delivered at our tertiary care center from 2013 to 2018. Deliveries were categorized as preprotocol (2013-2015; no standardized heparin-based thromboprophylaxis) and postprotocol (2016-2018). Patients receiving outpatient anticoagulation for active venous thromboembolism (VTE) or high VTE risk were excluded. Coprimary effectiveness and safety outcomes were postpartum VTEs and wound hematomas, respectively, newly diagnosed after delivery and up to 6 weeks postpartum. Secondary outcomes were other wound or bleeding complications, including unplanned surgical procedures (eg, hysterectomies, wound explorations) and blood transfusions. Outcomes were compared between groups, and adjusted odds ratios (aORs) and 95% CIs were calculated using the preprotocol group as reference. Results Of 24,229 deliveries, 11,799 (49%) occurred preprotocol. Although patients were more likely to receive heparin-based prophylaxis postprotocol (15.6% vs 1.2%, P Conclusion Risk-stratified heparin-based thromboprophylaxis in a general obstetric population was associated with increased wound and bleeding complications without a complementary decrease in postpartum VTE. Guidelines recommending this strategy should be reconsidered.
- Published
- 2021