The Internet Book of Critical Care Podcast
IBCC Episode 47 Hyperthermia
Jul 31, 2019
This podcast covers the diagnosis and management of hyperthermia in the ICU, including topics like the difference between fever and hyperthermia, diagnostic evaluation of hyperthermia, sedation and shivering suppression, indications for intubation, and management of heat stroke.
29:46
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Quick takeaways
- Hyperthermia is indicated by an absolute temperature of over 41 degrees Celsius and requires ICU level care.
- Heat stroke can be caused by toxicologic factors like serotonin syndrome or salicylate intoxication, as well as neuroleptic malignant syndrome, hypothalamic disease, or certain endocrine conditions.
Deep dives
Definition and Diagnosis of Hyperthermia
Hyperthermia is an imbalance of heat generation and clearance in the body, where heat overload occurs. It is distinguished from fever, which is mediated by cytokines and maxes out around 104 degrees Fahrenheit or 40 degrees Celsius. Hyperthermia is indicated by an absolute temperature of over 41 degrees Celsius. Fever-reducing medications are not effective for hyperthermia, and motor features such as rigidity or clonus indicate a toxic or environmental cause.
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