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Chapter: Clinical Cases in Anesthesia : Malignant Hyperthermia

How are patients with known MH susceptibility treated?

Anxiety may contribute to MH crises. Therefore, some anesthesiologists recommend premedication with anxi-olytics such as benzodiazepines.

How are patients with known MH susceptibility treated?

 

Anxiety may contribute to MH crises. Therefore, some anesthesiologists recommend premedication with anxi-olytics such as benzodiazepines. Patients experiencing preoperative pain can receive opioids. Dantrolene premed-ication is no longer necessary and should be avoided in the pregnant patient because dantrolene crosses the placenta and produces uterine atony.

 

Either a “clean” machine or an anesthesia machine in which the oxygen flow has been on at 10 L flow for 20 min-utes should be used. Iced saline solutions and dantrolene should be available. Regional anesthesia with either ester or amide local anesthetics may be preferable to general anes-thesia when possible. General anesthesia may be induced  with propofol, barbiturates, oxygen, and opioids. Muscle relaxation for tracheal intubation is achieved with nondepolarizing muscle relaxants such as vecuronium, mivacurium, and cis-atracurium. The advisability of administering curare is questionable. Anesthesia mainte-nance is accomplished with total intravenous anesthetics with or without nitrous oxide. Other acceptable agents include midazolam, diazepam, and droperidol. Antagonism of neuromuscular blockade may be achieved with acetyl-cholinesterase inhibitors and anticholinergics.


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Clinical Cases in Anesthesia : Malignant Hyperthermia : How are patients with known MH susceptibility treated? |


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