In order to prevent postpartum hemorrhage, the time to start an IV drip of hysteronin is after the head of the baby is delivered in the second stage of labor. To prevent postpartum hemorrhage during labor, the doctor will usually start an IV drip of hysteronin after the baby’s head is delivered to help promote uterine contractions. It is important to control the rate of the drip to promote better uterine contractions. If the mother still has postpartum hemorrhage and weak uterine contractions, other drugs that are more effective in promoting uterine contractions may be needed. In addition, the use of specific drugs should be under the guidance of a doctor. Women must try their best to cooperate with the doctor’s treatment during labor and delivery. If at any time there are abnormalities such as dizziness, fever, persistent abdominal pain, etc., they must inform the healthcare personnel as soon as possible.