Malignant hyperthermia during orthognathic surgery: a case report.

Malignant hyperthermia is a rare life-threatening hyperthermic reaction that occurs during general anesthesia and is difficult to diagnose preoperatively. In most reported cases, final diagnoses of malignant hyperthermia were eventually confirmed by genetic testing after the episodes of hyperthermia. Dantrolene is the only specific medicine with improved treatment outcomes for malignant hyperthermia. In this work, we reported a case of malignant hyperthermia that occurred during orthognathic surgery. Malignant hyperthermia was successfully reversed because of the prompt recognition and specific treatment of dantrolene, and only slight increases in myoglobin and creatine kinase were observed postoperatively.