obtundation
Pronunciation: ob-tun-DAY-shun
Reduced level of consciousness between normal alertness and stupor, with delayed responses to stimuli.
Full Definition
Obtundation describes a specific level of altered consciousness characterized by reduced alertness and responsiveness that falls between normal consciousness and stupor. Patients appear drowsy, respond slowly to verbal stimuli, and may require repeated or loud verbal prompts to maintain attention. Unlike stupor, obtunded patients can be aroused to respond appropriately but quickly return to their lethargic state. This term provides more precision than generic descriptions like 'drowsy' and should be distinguished from delirium, which involves fluctuating attention and cognition.
Usage
Usage note: Use as part of structured consciousness assessment; distinguish from delirium or simple drowsiness.
In Context
- "The patient demonstrated obtundation requiring repeated verbal stimulation for responses." — Emergency department assessment
- "Obtundation gradually improved following correction of hypernatremia." — ICU progress note