A member asked:

Can tias over time be caused by temporary or partial occlusion of vertebral or carotid arteries and cause foci or lesions?

2 doctors weighed in across 2 answers

Yes: Tia's are short-lived, about 20-30- minutes and usually fully reverse. If not, it is a stroke with tissue damage, and then can be seen on an mri. The event heralds risk, and preventative treatment with an antiplatelet drug should be started. An embolism from say the heart or aorta, may need anti-coagulation. The greatest future risk of TIA is a stroke within one year.

Answered 8/6/2020

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Dr. Paul Skudder answered

Specializes in Vascular Surgery

Yes: TIAs are more often assoc with carotid stenosis (partial occlusion) than vertebral. Stenosis is almost never temporary. When a Dr. agrees TIA has occurred, a carotid ultrasound test is usually done to check for stenosis. Not all TIAS are assoc with carotid disease. TIAs with carotid stenosis are a real warning for stroke & frequently should be treated by carotid repair (surgery). Hope this helps

Answered 10/31/2018

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