Which parameter may be elevated and require monitoring in stroke care?

• A. Intracranial pressure (ICP)
• B. Cardiac output
• C. Serum potassium
• D. Platelet count

Answer: (A)

Elevated intracranial pressure is a key concern after stroke because brain tissue swelling from edema can raise the pressure inside the skull. When ICP rises, cerebral perfusion pressure (mean arterial pressure minus ICP) falls, risking further brain injury and potential herniation. Monitoring ICP lets clinicians detect rising pressure early and guide treatments to protect brain tissue, such as optimizing head position, draining CSF if an intraventricular monitor is in place, using hyperosmolar therapy (like hypertonic saline or mannitol), adjusting ventilation to control CO2, and, in severe cases, performing decompressive procedures. This concern is especially relevant in large ischemic strokes with malignant edema and in hemorrhagic strokes with mass effect. Other parameters like cardiac output, serum potassium, and platelet count matter for overall patient stability and safety, but they are not the primary factors that are specifically elevated and require the same targeted monitoring in stroke care.