Search results
Results from the WOW.Com Content Network
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 ]
There is no specific treatment for central core disease. Certain triggering anesthetics must be avoided, and relatives should be screened for RYR1 mutations that cause malignant hyperthermia. [2] Research has shown that some patients may benefit from treatment with oral salbutamol. [6] [7]
Certain physiological and pathological states may alter MAC. For example, MAC increases with hyperthermia and hypernatremia. Conversely, anemia, hypercarbia, hypoxia, hypothermia, hypotension (MAP < 40 mmHg), and pregnancy seem to decrease MAC. Duration of anesthesia, gender seem to have little effect on MAC. [8] Age has been shown to affect MAC.
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]
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]
Also, neuromuscular blockers may facilitate histamine release, which causes hypotension, flushing, and tachycardia. Succinylcholine may also trigger malignant hyperthermia in rare cases in patients who may be susceptible. In depolarizing the musculature, suxamethonium may trigger a transient release of large amounts of potassium from muscle fibers.
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.
A mutation in the RYR1 gene causing CNM may also cause susceptibility to malignant hyperthermia, a potentially life-threatening reaction to anesthesia. [1] While some patients with centronuclear myopathies remain ambulatory throughout their adult life, others may never crawl or walk and may require wheelchair use for mobility. There is ...