Transient ischemic attack (TIA) is best described as which of the following?

Transient ischemic attack (TIA) is best described as which of the following?

• A. A brief ischemic episode where cerebral blood supply is temporarily disrupted, lasting up to 30 minutes, often predicting future stroke.
• B. A full stroke.
• C. A seizure.
• D. A migraine.

Answer: (A)

A transient ischemic attack is a brief ischemic episode where cerebral blood supply is temporarily disrupted, with neurological symptoms that resolve within a short period, typically up to about 30 minutes. Because the blood flow is restored quickly, there is no lasting brain tissue damage, but it signals increased risk of a future stroke, making urgent evaluation and prevention essential. This differs from a full stroke, which causes permanent deficits due to infarction; a seizure, which stems from abnormal electrical activity in the brain; and a migraine, which involves headache and other symptoms that are not caused by transient cerebral ischemia.

A transient ischemic attack is a brief ischemic episode where cerebral blood supply is temporarily disrupted, with neurological symptoms that resolve within a short period, typically up to about 30 minutes. Because the blood flow is restored quickly, there is no lasting brain tissue damage, but it signals increased risk of a future stroke, making urgent evaluation and prevention essential. This differs from a full stroke, which causes permanent deficits due to infarction; a seizure, which stems from abnormal electrical activity in the brain; and a migraine, which involves headache and other symptoms that are not caused by transient cerebral ischemia.