Amornpetchakul P, et al. - Researchers performed a comparison of the effectiveness of intravenous carbetocin to that of intravenous oxytocin for prevention of atonic postpartum hemorrhage (PPH) after vaginal delivery in high-risk singleton pregnancies via undertaking a triple-blind randomized controlled trial including singleton pregnant women (20 years or older; gestational age at least 34 weeks) delivered at Siriraj Hospital between August 2016 and January 2017. These women had a vaginal delivery and had at least one risk factor for atonic postpartum hemorrhage. Findings revealed that compared to intravenous oxytocin, intravenous carbetocin proved more effective for the prevention of atonic PPH among these singleton pregnancies.