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Malignant hyperthermia (MH) is a type of severe reaction that occurs in response to particular medications used during general anesthesia, among those who are susceptible. [1] Symptoms include muscle rigidity , fever , and a fast heart rate . [ 1 ]
Recreational drugs such as amphetamines [17] and cocaine, [18] PCP, dextromethorphan, LSD, and MDMA may cause hyperthermia. [2] Malignant hyperthermia is a rare reaction to common anesthetic agents (such as halothane) or the paralytic agent succinylcholine. Those who have this reaction, which is potentially fatal, have a genetic predisposition. [2]
RyR1 mutations are associated with malignant hyperthermia and central core disease. [17] Mutant-type RyR1 receptors exposed to volatile anesthetics or other triggering agents can display an increased affinity for cytoplasmic Ca 2+ at activating sites as well as a decreased cytoplasmic Ca 2+ affinity at inhibitory sites. [18]
An outgrowth of this committee, the Anesthesia Patient Safety Foundation, was created in 1985 as an independent, nonprofit corporation with the goal "that no patient shall be harmed by anesthesia". [73] The rare but major complication of general anaesthesia is malignant hyperthermia.
Harrison experimentally induced malignant hyperthermia with halothane anesthesia in genetically susceptible pigs, and obtained an 87.5% survival rate, where seven of his eight experiments survived after intravenous administration of dantrolene.
Halothane sensitises the heart to catecholamines, so it is liable to cause cardiac arrhythmia, occasionally fatal, particularly if hypercapnia has been allowed to develop. This seems to be especially problematic in dental anesthesia. [25] Like all the potent inhalational anaesthetic agents, it is a potent trigger for malignant hyperthermia. [5]
Suxamethonium chloride (brand names Scoline and Sucostrin, among others), also known as suxamethonium or succinylcholine, or simply sux in medical abbreviation, [5] is a medication used to cause short-term paralysis as part of general anesthesia. [6] This is done to help with tracheal intubation or electroconvulsive therapy. [6]
Drug-induced fever is a symptom of an adverse drug reaction wherein the administration of drugs intended to help a patient causes a hypermetabolic state resulting in fever. The drug may interfere with heat dissipation peripherally, increase the rate of metabolism , evoke a cellular or humoral immune response , mimic endogenous pyrogen , or ...