Abstract
Background Pregnancy-related venous thromboembolism (VTE) is a leading preventable cause of maternal mortality in the United States; however, American guidelines for pharmacologic VTE prophylaxis remain less aggressive than other developed countries. The Safe Motherhood Initiative (SMI) combines aspects of American and international guidelines to increase utilization of prophylaxis and thereby decrease incidence of pregnancy-related VTE. Objectives To evaluate the prescribing and administration rates of pharmacologic VTE prophylaxis for women undergoing cesarean section (c-section) when retrospectively applying the SMI recommendations. Setting Large academic medical center in Sacramento, California, USA. Method This was a single-center retrospective cohort study of pregnant women undergoing c-section who would have met criteria for pharmacologic prophylaxis according to the SMI. Main outcome measures Prescribing and administration rates of mechanical and pharmacologic VTE prophylaxis. Secondary outcomes included incidence of thromboembolism within 6 weeks after c-section and thromboembolic associated mortality. Results A total of 616 charts were analyzed. When applying the SMI guidelines for VTE prophylaxis, the prescribing rates for mechanical and pharmacologic prophylaxis were 94.3% and 4.71% of patients, respectively, and 94.9% of ordered pharmacologic prophylaxis doses were administered. The incidence of 6-week post-partum VTE was 0.49%. There were no cases of VTE-associated mortality. Conclusion This study demonstrated that a large population of c-section patients fit the SMI criteria for pharmacologic VTE prophylaxis but did not receive it. We observed a 0.49% rate of VTE, which was slightly higher than the nationally reported average rate of 0.3%. With growing rates of pregnancy-associated VTE in the United States, perhaps a more aggressive guideline is warranted.
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