Which combination of findings is most worrisome for a rapidly expanding intracranial bleed with brain shift?

• A. Seizures, bilaterally pinpoint pupils, slow respirations
• B. Agitation, scleral hemorrhages, midpoint nonreactive pupils
• C. Decreased LOC, ipsilateral pupil dilation, contralateral motor deficit
• D. Stiff neck, severe headache, projectile vomiting

Answer: (C)

When a rapidly expanding intracranial bleed creates mass effect and brain shift, you’ll see a pattern of neurological deterioration that points toward impending herniation. The decreased level of consciousness reflects global brain dysfunction from rising intracranial pressure. The pupil on the same side as the mass or the side toward which the herniation is occurring often becomes dilated and nonreactive because the oculomotor nerve gets compressed as brain tissue herniates toward the tentorial notch. At the same time, motor pathways that cross to the opposite side can be compressed, producing a contralateral motor deficit. This combination—reduced consciousness, a dilated ipsilateral pupil, and a contralateral weakness—signals dangerous brain shift and requires urgent intervention and rapid transport.

Other options describe signs more typical of different problems (for example, overdose patterns or meningeal irritation) and don’t fit the classic progression of mass effect with brain herniation.