title: Letter: Preoperative excitement and malignant hyperthermia.
mesh_terms: D000328:Adult; D000768:Anesthesia, General / Q000009:adverse effects; D001007:Anxiety / Q000150:complications*; D002648:Child; D006801:Humans; D007273:Injections, Intramuscular; D007649:Ketamine / Q000008:administration & dosage / Q000009:adverse effects / Q000494:pharmacology; D008297:Male; D008305:Malignant Hyperthermia / Q000209:etiology*; D009129:Muscle Tonus / Q000187:drug effects*; D005082:Physical Exertion; D011229:Preanesthetic Medication / Q000009:adverse effects
chemical_list: D007649:Ketamine