Final answer:
Oxytocin is a common approach for pharmaceutical control of obstetrical hemorrhage.
Step-by-step explanation:
The common approach for pharmaceutical control of obstetrical hemorrhage is oxytocin. Oxytocin is a hormone that helps to stimulate uterine contractions and control bleeding after childbirth. It is commonly administered to prevent or treat postpartum hemorrhage, which is a significant cause of maternal mortality.