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Can Insulin increase Blood Pressure and cause a Stroke?

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We battle Mom's low blood pressure. But I found her on the floor recently and 911 was called. They suspected a stroke as her BP was 209/92, slurred speech, confusion, sweats. It is never that high! I suspect now she could have taken 55 units of Humalog the previous night instead of 55 units of Humulin 70/30. Could that have caused this serious episode? Thank you

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replied September 6th, 2006
Diabetes Answer A1422
Usually insulin has nothing to do with high blood pressure and the possibility of a brain stroke. High blood pressure can cause a brain stroke if an arterial blood vessel in the brain can’t handle the pressure and ruptures because of it. Then, a brain hemorrhage occurs. The opposite event is also possible. A brain stroke (from whatever cause) can increase intracranial pressure in the head due to a bleeding/infarct and the surrounding brain tissue edema. Increased intracranial pressure causes high blood pressure by a reflex mechanism. A CT-scan is necessary to conclude or exclude a brain insult.
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