Fever in a hospitalized patient: Difference between revisions

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= Definition =
= Fever in the hospitalized patient =

== Definition ==


* Core temperature >38.3ºC
* Core temperature >38.3ºC


== Pathophysiology ==
= Pathophysiology =


* Pyrogenic fever is caused by endogenous (IL-1, IL-6, TNF-alpha) or exogenous (from a microbe) pyrogen compounds
* Pyrogenic fever is caused by endogenous (IL-1, IL-6, TNF-alpha) or exogenous (from a microbe) pyrogen compounds
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* Decoupling of oxidative phosphorylation, as in drug-induced
* Decoupling of oxidative phosphorylation, as in drug-induced


== Differential Diagnosis ==
= Differential Diagnosis =


* Infectious
* Infectious
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** Traumatic brain injury or ischemic brain injury
** Traumatic brain injury or ischemic brain injury
** Endocrine fever
** Endocrine fever

![Causes of drug-induced hyperthermia](Drug-induced hyperthermia.png)

Revision as of 11:47, 13 August 2019

Definition

  • Core temperature >38.3ºC

Pathophysiology

  • Pyrogenic fever is caused by endogenous (IL-1, IL-6, TNF-alpha) or exogenous (from a microbe) pyrogen compounds
    • Either direct action or cytokine production that stimulates the organum vasculosum of the lamina terminalis (OVLT) in the hypothalamus
  • Neurogenic
  • Decoupling of oxidative phosphorylation, as in drug-induced

Differential Diagnosis

  • Infectious
  • Non-infectious
    • Inflammatory diseases
    • Drug-induced, including ß-lactam antibiotics, sulphonamides, antipsychotics, propofol
    • Traumatic brain injury or ischemic brain injury
    • Endocrine fever