Mardy AH, et al. – A retrospective cohort study is carried out to portray the utilization of venous thromboembolism prophylaxis amid antepartum and postpartum hospitalizations in the United States. Albeit antepartum and postpartum venous thromboembolism prophylaxis is becoming increasingly common, especially in the setting of medical or obstetric risk factors, utilization of prophylaxis varies regionally and on a hospital level. Some risk factors for venous thromboembolism were related to lower rates of prophylaxis. The heterogeneity of clinical approaches to venous thromboembolism prophylaxis for these patient populations may represent an opportunity to perform outcomes research to further clarify best practices.