Stroke

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    Created by @azza

    What causes a stroke?

    Disruption of blood supply to the brain.

    What is ischemia?

    Occurs when blood flow decreases significantly.

    What happens during ischemia?

    Leads to energy failure and acidosis in cells.

    How does an embolic stroke differ from a thrombotic stroke?

    Embolic involves a traveling blood clot; thrombotic is a blockage at the site.

    What percentage of strokes are ischemic?

    Approximately 85% of strokes.

    What is a hemorrhagic stroke?

    Involves bleeding from vessels within the brain.

    What can cause a hemorrhagic stroke?

    High blood pressure or a ruptured blood vessel.

    What leads to cell injury during a stroke?

    Increase in intracellular calcium and free radical formation.

    What causes an intracerebral hemorrhage?

    A blood vessel bursts inside the brain, spilling blood into nearby tissue.

    What happens to brain cells during an intracerebral hemorrhage?

    They lose oxygen supply, leading to damage or death.

    How does a subarachnoid hemorrhage differ from an intracerebral hemorrhage?

    It occurs in the subarachnoid space, not inside the brain.

    What is a transient ischemic attack (TIA)?

    A temporary stroke-like event with no permanent brain damage.

    What happens during a TIA?

    The brain is temporarily deprived of oxygen-rich blood.

    What is a major risk factor for ischemic stroke?

    Hypertension is a significant modifiable risk factor.

    How does smoking affect stroke risk?

    It exposes individuals to harmful tobacco substances.

    What role does diabetes play in stroke risk?

    It increases the likelihood of developing stroke-related conditions.

    What is the impact of high cholesterol on stroke risk?

    It contributes to the buildup of plaques in blood vessels.

    What lifestyle factor can increase stroke risk?

    Excessive alcohol consumption can lead to higher risk.