moderately clogged posterior left and right cerebral blood vessels that diminish blood flow to the brain and cause tia's. can these cause permanent blindness, paralysis, or loss of speech?
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Not only that, but death! Any vessel that's plugged or broken will cause loss of oxygen to some area. That can lead to swelling and cascading dying cells. Treatment is directed to preserving as many cells as possible via anti-clotting agents, surgery if a vessel burst. The "Golden Hour " of treatment is acute here.
john e russo md facm faafp
You do not identify which cerebral blood vessels you are referring to and you do not define what 'moderately clogged' means. Stenosis of 70% or less in the posterior cerebral artery tends not to be sufficient to cause an atherothrombotic brain infarction (a 'stroke' but a stroke not caused by bleeding - the vast majority of so-called strokes are atherothrombotic in nature). 70% stenosis may however lead to transient ischemic 'attacks' which are stroke-like symptoms of a brief - typically not more than 4 to 6 hours - duration. With TIAs there is no permanent damage although a TIA implies an increased risk of a future atherothrombotic brain infarction. The posterior cerebral artery may affect vision but not loss of speech. Loss of speech and 'paralysis' usually implies an interruption of blood flow in the distribution of the middle cerebral artery. Again 70% stenosis is most often not sufficient to cause 'permanent' harm but there is quite a bit of variability from person to person. There are so many limitations in this forum that a precise answer to a question is often not possible. I have done the best that I could with what little information I was presented. If I may be of further assistance please let me know. I wish you the very best of health and in all things may God bless.