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:-

Anaesthesia

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:-

Allergy in immediate perioperative period is due to:

All of the following are true about lumbar puncture except:

Which of these is most commonly used as pre-anesthetic medication?