This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'A newborn developed respiratory depression in a postoperative ward. It can result from the use of? \nSelect and explain. \nA. Opioid, B. Propofol, C. Furosemide, D. Heparin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Babies born to mothers who were addicts prior to delivery will also be dependent. Withdrawal symptoms may be irritability, excessive crying, tremors, frantic suckling if fists , diarrhea, sneezing, yawning, vomiting and fever and can result in respiratory depression. All the other given drugs do not produce withdrawal symptoms in newborn. Ref: KD Tripathi 8th ed.', 'role': 'assistant'}]