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Vital sign temperature

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Uncommon Heat Illnesses

 

<!--<h1>Uncommon Heat Illnesses</h1>--> <strong>Malignant Hyperthermia </strong> <br> <br> This rare condition is seen sometimes in a patient undergoing general anesthesia. Muscles become rigid and the temperature rises, sometimes to 107.6F (42C). The mechanism appears to be a genetic muscle defect permitting the inappropriate release of calcium from cells. <br> <strong>Treatment: </strong>general anesthesia is stopped, cooling is undertaken as for heat stroke, and a muscle relaxant (dantrolene sodium) is given as a 2 mg/kg IV bolus. <br> <br> <strong>Neuroleptic Malignant Syndrome </strong> <br> <br> A similar rare situation exists with some patients on phenothiazines. The temperature rises, the muscles become rigid, and autonomic instability (tremors, tachycardia, sweating) and confusion appear. The mechanism seems to be dopamine receptor blockade producing muscle spasticity and heat production (up to 104F/40C). <br> <strong>Treatment: </strong>cooling is begun as for heat stroke, IV normal saline is given and dantrolene is administered as a 1 mg/kg IV bolus.

 


 
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