8/6/2025 1:31:19 PM
A Transient Ischemic Attack (TIA) is a serious neurological event that should be clearly understood, as it serves as an early warning of an impending ischemic stroke.
What is TIA?
A TIA is a transient episode of focal cerebral ischemia without acute infarction detectable on neuroimaging (MRI/CT).
Cerebral blood flow is restored quickly enough to prevent permanent brain tissue damage.
Symptoms are typically short-lived, most lasting less than 1 hour—many resolve within minutes. If neurological deficits persist for more than 1 hour, a completed stroke is more likely.
The danger lies in the fact that while TIAs leave no immediate permanent deficits, they strongly indicate a high short-term risk of a full-blown stroke—sometimes within the next 24–48 hours.
Key Warning Signs – FAST mnemonic:
F – Face: Sudden facial droop or asymmetry
A – Arm: Weakness or numbness in one arm or leg
S – Speech: Slurred or impaired speech, difficulty finding words
T – Time: Sudden onset—call emergency services immediately
Other Possible Symptoms:
Why Urgent Evaluation is Essential:
Prevention of TIA and Stroke:
References:
American Stroke Association (ASA). Guidelines for the Early Management of Patients with Acute Ischemic Stroke, 2019.
WHO Global Stroke Guidelines.
Vietnam Stroke Association – Updated Recommendations on TIA and Minor Stroke.