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Obtundation
Mild-to-moderate reduction in conscious awareness
Mild-to-moderate reduction in conscious awareness
| Field | Value |
|---|---|
| name | Obtundation |
| field | 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. 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.
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.
Symptoms include delayed reaction time, lessened interest in the environment, very short attention span, and excessive sleeping.
The root word, obtund, means "dulled or less sharp" (cf. obtuse angle).
References
References
- (2010). "A Clinical Guide to Epileptic Syndromes and their Treatment". Springer Science & Business Media.
- In Wells, B. G.; in DiPiro, J. T.; in Schwinghammer, T. L.; in DiPiro, C. V. (2017). ''Pharmacotherapy handbook''.
- (29 November 2017). "The Difference Between Lethargy, Obtundation, Stupor, and Coma {{!}} Time of Care".
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