Obtundation

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Obtundation
Specialty Emergency medicine

Obtundation is mild to moderate alertness reduction (altered level of consciousness) with decreased interest in the environment and slower than normal reactivity to stimulation. [1] It is distinguished from the much stronger states of unresponsiveness of stupor and coma. Obtundation typically occurs as a result of a medical condition or trauma. [2]

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There is a wide range of potential causes including head injury, interruption of blood circulation, impaired oxygenation or carbon dioxide toxicity (hypercapnia), central nervous system (CNS) infections, drug intoxication or withdrawal, post-seizure state, hypothermia, and metabolic derangements such as hypoglycemia, hyponatremia, and hypercalcaemic crisis. [3]

Symptoms include delayed reaction time, lessened interest in the environment, very short attention span, and excessive sleeping. [4] [5]

The root word, obtund, means "dulled or less sharp" (cf. obtuse angle ).

See also

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References

  1. "Obtundation - an overview | ScienceDirect Topics".
  2. Panayiotopoulos, C. P. (2010). A Clinical Guide to Epileptic Syndromes and their Treatment. Springer Science & Business Media. pp. 76–77. ISBN   9781846286445 . Retrieved 7 March 2018.
  3. In Wells, B. G.; in DiPiro, J. T.; in Schwinghammer, T. L.; in DiPiro, C. V. (2017). Pharmacotherapy handbook.
  4. "Obtundation - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2022-03-26.
  5. "The Difference Between Lethargy, Obtundation, Stupor, and Coma | Time of Care". 2017-11-29. Retrieved 2022-03-26.