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Originally Posted by Villages PL
A "transient ischemic attack" (mini-stroke) happens when there's a temporary drop in the blood supply, depriving the brain of oxygen. My father had low-to-normal blood pressure so I doubt it was caused by "increased pressure". And it seems that a clot would have had longer lasting effects. There was no noticeable after effect from his strokes, other than loss of smell that was noticed sometime later. Also, an MRI showed that he had absolutely no coronary artery disease.
I said he had a "few" mini-strokes but I was talking about the ones that I was aware of. He possibly could have had many more during the night, when his blood pressure could have been too low, and not been aware of them.
Yes, but what causes the plaque to begin building up in the first place? I have read that one of the causes could be a lack of oxygen to the brain. And that's exactly what I described above with a transient ischemic attack.
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PL, medical information indicates that the causes of a TIA, including a small blood clot may have passed by the time the patient reaches medical care.
There are several diseases and hereditary factors, not caused by poor nutrition or inactivity, that can cause small blood clots sans aetherosclerotic disease and HBP. Hemochromatosis and more insidious... heart arrhythmia or atrial fibrillation which may go undetected until a clot has formed in the atria and pumped out after the heart returns to normal rhythm, are examples of two of them.
Heart arrhythmia's are often a "wiring" problem in the heart. They can also be caused by heart disease in later life. One may have a complete absence of cardiac disease, live the cleanest life be plagued with medical issues.
The TIA's and Alzheimer's disease may have no correlation other than being hereditary in some individuals.