Sat27November0556PM 32

Signs of raised intracranial pressure (ICP) on a computerised axial tomography scan include:

True / False

Evidence of diffuse brain injury Correct

Herniation of brain parenchyma Correct

Loss of grey/white differentiation Incorrect answer selected

Ventricular compression Incorrect answer selected

Effacement of sulci Correct

Explanation

The signs of raised intracranial pressure (ICP) on a computerised axial tomography scan (CT scan) include:

Herniation of brain paranchyma (subfalcine, transtentorial or cerebellar tonsillar)

compression of the ventricles and mid-line shift

effacement of the sulci, and

signs of diffuse brain injury.

The loss of grey/white matter differentiation is a sign of cerebral oedema, which if extensive may suggest raised intracranial pressure but is not a sign of raised ICP per se.

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