Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0024591 (malignant hyperthermia)
 2,353 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A young healthy male, who had three consecutive episodes of postoperative hyperthermia was anaesthetized with special precautions to prevent malignant hyperthermia. Despite neuroleptic anaesthesia and dantrolene pretreatment, the patient experienced post-anaesthetic hyperthermia. The patient's clinical picture was almost identical to the symptoms experienced by two of his maternal relatives. All three experienced nausea, vomiting, muscle cramps and high fever which occurred between five to seven hours after general anaesthesia. The serum potassium (K) and creatinine phosphokinase (CPK) levels determined during the hyperthermic episode and on the next day were not elevated. On the basis of the patient's family history, his clinical picture, and his laboratory data, we speculate that this patient might have a form of malignant hyperthermia or a possible new variant.
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PMID:Malignant hyperthermia: a possible new variant. 400 78

Induction, emergence and recovery characteristics were compared during sevoflurane or halothane anaesthetic in a large (428) multicentre, international study of children undergoing elective inpatient surgical procedures. Two hundred and fourteen children in each group underwent inhalation induction with nitrous oxide/oxygen and sevoflurane or halothane. Incremental doses of either study drug were added until loss of eyelash reflex was achieved. Steady state concentrations of anaesthesia were maintained until the end of surgery when anaesthetic agents were terminated simultaneously. Time variables were recorded for induction, emergence and the first need for analgesia in the recovery room. In addition, in 86 of the children in both groups, venous blood samples were drawn for plasma fluoride levels during and after surgery. There was a trend toward smoother induction (induction of anaesthesia without coughing, breath holding, excitement laryngospasm, bronchospasm, increased secretion, and vomiting) in the sevoflurane group with faster induction (2.1 min vs 2.9 min, P = 0.037) and rapid emergence times (10.3 min vs 13.9 min, P = 0.003). Among the children given sevoflurane, 2% developed bradycardia compared with 11% in the halothane group. Postoperatively, 46% of the children in the halothane group developed nausea and or vomiting versus 31% in the sevoflurane group (P = 0.002). Two children in the halothane group developed cardiac dysrhythmia and were dropped from the study. In addition, a child in the halothane group developed malignant hyperthermia, received dantrolene, and had an uneventful recovery. Mean maximum inorganic fluoride concentration was 18.3 microM.l-1. The fluoride concentrations peaked within one h of termination of sevoflurane anaesthetic and returned rapidly to baseline within 48 h. This study suggests that sevoflurane may be the drug of choice for the anaesthetic management of children.
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PMID:A comparison of sevoflurance to halothane in paediatric surgical patients: results of a multicentre international study. 882 44

Anesthesia requires informed consent because it is an invasive procedure with certain risks. However, the state of informed consent for anesthesia in Japan remains unclear. The purpose of this survey was to examine the state of informed consent for anesthesia in Japan. A questionnaire was sent to all hospitals certified by the Japanese Society of Anesthesiologists (n = 854). The questionnaire consisted of four sections: explanation of the anesthesia, method of documentation, consent for anesthesia, and other information such as the hospital's size. A total of 504 (59.0%) questionnaires were completed and returned. At 96.7% of hospitals, an anesthesiologist would explain the scheduled anesthesia. Most departments provide an explanation of dental damage, malignant hyperthermia, and nausea/vomiting. Explanation of anesthesia was standardized at 59.0% of hospitals. A written description was handed out to patients routinely at 61.3% of hospitals. Although consent for anesthesia was obtained at more than 90% of departments, only 59.9% of departments would keep records of having obtained consent. This survey found that the explanation of anesthesia varied among hospitals and was not standardized in Japan. Further attention is needed on how to improve the documentation of informed consent.
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PMID:Informed consent for anesthesia: survey of current practices in Japan. 1626 70

Increasing evidence suggests that total intravenous anaesthesia (TIVA) may be the preferred anaesthetic for cancer resection surgery. To assist the preparation of a randomised controlled trial (RCT) examining Volatile (versus TIVA) Anaesthesia and Perioperative Outcomes Related to Cancer (VAPOR-C) we developed an 18-question electronic survey to investigate practice patterns and perspectives (emphasising indications, barriers, and impact on cancer outcomes) of TIVA versus inhalational general anaesthesia in Australasia. The survey was emailed to 1,000 (of 5,300 active Fellows) randomly selected Australian and New Zealand College of Anaesthetists (ANZCA) Fellows. The response rate was 27.5% (n=275). Of the respondents, 18% use TIVA for the majority of cases. In contrast, 46% use TIVA 20% of the time or less. Respondents described indications for TIVA as high risk of nausea, neurosurgery, and susceptibility to malignant hyperthermia. Lack of equipment, lack of education and cost were not considered barriers to TIVA use, and a significant proportion (41%) of respondents would use TIVA more often if setup were easier. Of the respondents, 43% thought that TIVA was associated with less cancer recurrence than inhalational anaesthesia, while 46% thought that there was no difference. Yet, only 29% of respondents reported that they use TIVA often or very often for cancer surgery. In Australasia, there is generally a low frequency of TIVA use despite a perception of benefit when compared with inhalational anaesthesia. Anaesthetists are willing to use TIVA for indications where sufficient evidence supports a meaningful level of improvement in clinical outcome. The survey explores attitudes towards use of TIVA for cancer surgery and demonstrates equipoise in anaesthetists' opinions regarding this indication. The inconsistent use of TIVA in Australasia, minimal barriers to its use, and the equipoise in anaesthetists' opinions regarding the effect of TIVA versus inhalational anaesthesia on cancer outcomes support the need for a large prospective RCT.
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PMID:Inhalational versus propofol-based total intravenous anaesthesia: practice patterns and perspectives among Australasian anaesthetists. 3018 22

A 20-year-old man with a rare neurodegenerative disease developed hypermetabolic symptoms with dyskinesia after a third ventriculostomy for hydrocephalus. The initial presentation was concerning for an acute dystonic reaction after metoclopramide was administered for nausea. He concurrently developed hypermetabolic symptoms, including hyperthermia, tachycardia, and a lactic acidosis. The diagnosis was broadened to include neuroleptic malignant syndrome, serotonin syndrome, and malignant hyperthermia. Although perhaps less intellectually satisfying but more true to clinical reality, we did not isolate a single diagnosis but treated effectively all 3 with dantrolene sodium and benzodiazepine.
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PMID:Hypermetabolic Syndrome and Dyskinesia After Neurologic Surgery for Labrune Syndrome: A Case Report. 3237 20