A client with increased intracranial pressure demonstrates decorticate posturing. Which finding would the nurse expect?

A client with increased intracranial pressure demonstrates decorticate posturing. Which finding would the nurse expect?

• A. Hip flexion and knee extension
• B. Flexion of the arms with wrists flexed and adducted
• C. No movement
• D. Plantar flexion of the legs

Answer: (D)

Abnormal posturing patterns in increased ICP reflect where brain injury disrupts motor pathways. Decorticate posturing shows the arms in flexion with wrists flexed and adducted, while the legs extend. This flexor posture of the upper limbs indicates disruption above the red nucleus in the midbrain, meaning the cortex and internal capsule pathways are affected. So the expected finding is the arms flexed with wrists flexed and adducted, with the lower extremities extended. Plantar flexion of the legs describes decerebrate posturing—extension of all limbs with feet pointed downward—which indicates a more severe brainstem involvement and is a different pattern. Hip flexion with knee extension and no movement aren’t characteristic of decorticate posturing.

Abnormal posturing patterns in increased ICP reflect where brain injury disrupts motor pathways. Decorticate posturing shows the arms in flexion with wrists flexed and adducted, while the legs extend. This flexor posture of the upper limbs indicates disruption above the red nucleus in the midbrain, meaning the cortex and internal capsule pathways are affected.

So the expected finding is the arms flexed with wrists flexed and adducted, with the lower extremities extended. Plantar flexion of the legs describes decerebrate posturing—extension of all limbs with feet pointed downward—which indicates a more severe brainstem involvement and is a different pattern. Hip flexion with knee extension and no movement aren’t characteristic of decorticate posturing.