PTH and pulmonary arterial hypertension: Around 2.5 to 20% of patients with NCPH develop PPH.4, 5, 6, 7, 9, 10, 11, 12Postpartum hemorrhage management is the same as that of patients without PTH, including red blood cell units and platelet transfusion, oxytocin drip, and uterine artery embolization or surgery in case of failure of the above.