Which statement about TIAs is true?

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Multiple Choice

Which statement about TIAs is true?

Explanation:
TIAs are brief episodes of neurological dysfunction caused by temporary cerebral ischemia that resolve without lasting brain damage. Under the traditional teaching, their symptoms stop within 24 hours, often much sooner, which is why the statement about symptoms lasting less than 24 hours is true. This reflects the transient nature of the event—the deficits are reversible and do not persist beyond a day. The other options imply longer, indefinite, or exact 24-hour durations which are not characteristic of TIAs. If symptoms endure beyond 24 hours, that would be considered a stroke rather than a TIA, and TIAs resolve because blood flow is restored and tissue injury is not sustained.

TIAs are brief episodes of neurological dysfunction caused by temporary cerebral ischemia that resolve without lasting brain damage. Under the traditional teaching, their symptoms stop within 24 hours, often much sooner, which is why the statement about symptoms lasting less than 24 hours is true. This reflects the transient nature of the event—the deficits are reversible and do not persist beyond a day.

The other options imply longer, indefinite, or exact 24-hour durations which are not characteristic of TIAs. If symptoms endure beyond 24 hours, that would be considered a stroke rather than a TIA, and TIAs resolve because blood flow is restored and tissue injury is not sustained.

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