OXT and pulmonary arterial hypertension: Ideally, future RCTs should be placebo-controlled and double-blinded, involve other obstetric populations (women with previous CS and those at high risk for PPH), as well as other types of CS (in the 1st and 2nd stages of spontaneous and induced labor previously exposed to oxytocin), and measure all PPH prevention core results, including adverse effects and women’s views.