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
An 85 yr old lady with history of fracture neck of femur, during GA under halothane anesthesia for internal fixation of fracture suddenly develops severe hypotension, bradycardia, capnogram shows sudden fall end tidal carbon dioxide, and most probable diagnosis is:-
assistant
The correct answer is  None