Here's a cool fact:
Monroe Kenri's law states that cerebral perfusion pressure = Mean blood pressure (MBP) - Intracranial pressure (ICP)
Hence, in cases of increased ICT or intrcranial heamorrhage, BP rises.
This is physiological so that blood supply to the brain can be maintained.
Hence, in cases of stroke, never try to reduce BP unless it is above 200. If you reduce BP, the blood supply to brain is compromised.
Cushing's triad in cases of increased ICT:
1. Increased BP
3. Irregular respiration.
(Because increased ICP compresses the brain stem)
Related post: Cushing's triad (How to make medical notes)