ASK AN EXPERT: IS A TRANSIENT ISCHEMIC ATTACK ALWAYS A BLOCKAGE OR MAY IT OCCASIONALLY BE A BRAIN HEMORRHAGE?
Answered by Dr. Geetha Sree Namala
Doctor of Medicine - MD · 4 years of experience · India
Transient ischemic attack is a warning sign that the person may have stroke in the future. This stroke can be either ischemic or hemorrhagic. In transient ischemic attacks blood flow to the brain is interrupted for small period of time either due to blockage or bleeding resulting in symptoms that are seen in stroke. These symptoms are reversible.
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Answered by Dr. Matheus R Cerqueira
Specialist in Family and Community Medicine · 7 years of experience · Brazil
TIAs have three pathophysiological mechanisms as causes: embolic (caused by obstruction of an artery by an embolus), lacunar (induced by stenosis of a vessel) and low-flow (caused by obstructive atherosclerotic lesions). Hemorrhages usually progress to ischemia, which mischaracterizes the TIA.
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Answered by Dr. Gustavo Campos
Doctor of Medicine · 9 years of experience · Brazil
The term “transient ischemic attack” is commonly used to describe a condition induced by a blockage in blood flow that results in ischemia. A minor brain hemorrhage, on the other hand, may occasionally resemble a transient ischemic attack.
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