system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
2 hours after being admitted to the hospital because of a fracture of the right ankle, a 75-year-old man continues to complain of pain despite treatment with acetaminophen and ibuprofen. He has a history of dementia and cannot recall his medical history. The presence of which of the following features would most likely be a reason to avoid treatment with morphine in this patient?
assistant
Biliary tract dysfunction