Decerebrate Posturing
Pronunciation: deh-SER-eh-brate
Abnormal posturing characterized by extension of arms and legs, indicating severe brainstem damage.
Full Definition
Decerebrate posturing is an abnormal motor response to noxious stimuli characterized by rigid extension of the arms and legs, with internal rotation of the arms and plantar flexion of the feet. This posturing pattern indicates damage to the brainstem, specifically at the level between the red nucleus and the vestibular nucleus. It is considered more severe than decorticate posturing and suggests a poorer prognosis. The condition is often observed in patients with traumatic brain injury, stroke, or other forms of severe brain damage.
Usage
Usage note: Often confused with decorticate posturing; decerebrate involves extension while decorticate involves flexion of arms.
In Context
- "The patient exhibited decerebrate posturing bilaterally, indicating severe brainstem injury." — Clinical assessment report
- "Progression from decorticate to decerebrate posturing suggested worsening neurological status." — Medical progress note