<prompt> A 28-year-old man came for shoulder surgery. The patient had a documented episode of malignant hypehermia in a previous surgery under general anesthesia. Which of the following neuromuscular blockers is contraindicated in this patientSuccinylcholinePancuroniumRocuroniumVecuronium  <response>: Malignant hypehermia is a life-threatening hypermetabolic dis order that is triggered by succinylcholine and the volatile inhaled anesthetics isoflurane, desflurane, and sevoflurane. All triggering agents are contraindicated in patients with a history of malignant hypehermia. 