You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 40 weeks pregnant developed postpaum hemorrhage due to uterine atony. Which of the following drug can be given to this patient to stop the bleeding? and explain in detail?
Ergot alkaloids markedly increase the motor activity of the uterus. Although their capacity to induce sustained uterine tetany precludes their use in the induction or facilitation of labor, they are used to prevent or treat postpaum hemorrhage in normotensive women. In this setting, the preferred ergot alkaloids are ergonovine or its methyl analog methylergonovine (methergine). They are administered intramuscularly or intravenously, exhibit rapid onsets of action, and their effects persist for 45 minutes to 3 hours depending on the route of administration. Adverse effects include nausea and vomiting, elevated blood pressure, and decreased pain threshold requiring analgesia. Ref: Schimmer B.P., Parker K.L. (2011). Chapter 66. Contraception and Pharmacotherapy of Obstetrical and Gynecological Disorders. In L.L. Brunton, B.A. Chabner, B.C. Knollmann (Eds), Goodman & Gilman's The Pharmacological Basis of Therapeutics, 12e.