This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'PG F-2d contrandicated is in: \nSelect and explain. \nA. Bronchial asthma, B. DM, C. Twins, D. HT', 'role': 'user'}, {'content': 'Answer: A \nExplanation: PG F-2d is never used in asthmatic patients.\n\n"Postpartum hemorrhage is treated with oxytocin or PGE2. Prostaglandin F-2a or ergotamine derivatives are contraindicated because they may cause significant bronchospasm."\n\n—Williams 24/e, p 1015\nRemember: In asthmatic patients PGE2 is not contraindicated and can be used for cervical ripening and induction.', 'role': 'assistant'}]