Hemorrhagic stroke pathophysiology involves which sequence?

Hemorrhagic stroke pathophysiology involves which sequence?

• A. Blockage of arteries
• B. Bleeding into brain tissue causing inflammation, edema, and increased intracranial pressure
• C. Demyelination
• D. Infection

Answer: (B)

Hemorrhagic stroke starts with rupture of a cerebral blood vessel, so blood rapidly leaks into brain tissue. This intraparenchymal bleeding disrupts nearby neural tissue and creates a mass effect as the hematoma expands. The blood products that spill into the brain provoke an inflammatory response, leading to edema—vasogenic edema from breakdown of the blood-brain barrier and cytotoxic edema from cellular injury. As swelling and the accumulating blood increase pressure inside the skull, intracranial pressure rises, which can reduce cerebral perfusion and risk herniation. This sequence of bleeding, inflammation, edema, and rising intracranial pressure is the hallmark of hemorrhagic stroke pathophysiology. Blockage of arteries describes ischemic stroke, demyelination occurs in diseases like multiple sclerosis, and infection is not the primary sequence of events in a hemorrhagic stroke (though it can complicate recovery).

Hemorrhagic stroke starts with rupture of a cerebral blood vessel, so blood rapidly leaks into brain tissue. This intraparenchymal bleeding disrupts nearby neural tissue and creates a mass effect as the hematoma expands. The blood products that spill into the brain provoke an inflammatory response, leading to edema—vasogenic edema from breakdown of the blood-brain barrier and cytotoxic edema from cellular injury. As swelling and the accumulating blood increase pressure inside the skull, intracranial pressure rises, which can reduce cerebral perfusion and risk herniation. This sequence of bleeding, inflammation, edema, and rising intracranial pressure is the hallmark of hemorrhagic stroke pathophysiology. Blockage of arteries describes ischemic stroke, demyelination occurs in diseases like multiple sclerosis, and infection is not the primary sequence of events in a hemorrhagic stroke (though it can complicate recovery).