Which term describes a brief episode of neurologic dysfunction due to temporary disruption of cerebral blood flow?

Which term describes a brief episode of neurologic dysfunction due to temporary disruption of cerebral blood flow?

• A. Seizures
• B. Dementia
• C. Transient Ischemic Attacks (TIAs)
• D. Epilepsy

Answer: (C)

Transient Ischemic Attacks describe a brief neurologic dysfunction caused by a temporary interruption of blood flow to parts of the brain. The deficits arise from a short-lived lack of oxygen to brain tissue and typically resolve as soon as blood flow returns, often within minutes to an hour, leaving no lasting brain damage. Because the event signals that the brain is at risk for a future stroke, TIAs are a crucial warning to seek prompt medical evaluation and risk-factor management. This differs from seizures or epilepsy, which stem from abnormal electrical activity in the brain rather than a vascular blockage, and from dementia, which is a chronic, progressive decline in cognitive function rather than a sudden, temporary event.

Transient Ischemic Attacks describe a brief neurologic dysfunction caused by a temporary interruption of blood flow to parts of the brain. The deficits arise from a short-lived lack of oxygen to brain tissue and typically resolve as soon as blood flow returns, often within minutes to an hour, leaving no lasting brain damage. Because the event signals that the brain is at risk for a future stroke, TIAs are a crucial warning to seek prompt medical evaluation and risk-factor management.

This differs from seizures or epilepsy, which stem from abnormal electrical activity in the brain rather than a vascular blockage, and from dementia, which is a chronic, progressive decline in cognitive function rather than a sudden, temporary event.