How exactly does high blood pressure cause kidney failure?

December 21st, 2011 | by admin |
Goobery asked:


I heard that it can cause Kidney failure. How and why? What does our blood pressure have to do with the kidney’s? All I know is that our kidneys filter out toxins and if they don’t filter out properly that can cause high blood pressure. but other then that I don’t know.

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    1. No Responses to “How exactly does high blood pressure cause kidney failure?”

    2. By krazegurl_ds on Dec 23, 2011 | Reply

      The Kidneys contain a part called the Glomerulus that is the filter part of the kidney it is made up of thousands of microscopic blood vessels like capillaries. When you B/P is to high or stays slightly high for to long it strains these tiny blood vessels and causes then to weaken and be damaged before there time. This is why if you have hypertension you will be put on B/P meds to help save you kidneys or at least make them last longer.

      Also heres a link to a picture of the inside structure of the kidney, notice all those blood vessels in there, that’s why high B/P messes up your kidneys.

    3. By Walt on Dec 25, 2011 | Reply

      Well I blood pressure is when your blood pumps fast and if your kidneys can’t process it fast they get overworked trying to do it they fail?

    4. By cheruvima on Dec 25, 2011 | Reply

      The same way high blood pressure damages the blood vessels in your brain and gives you a stroke, it can damage the much smaller and more delicate blood vessels of your kidneys, and your kidneys will then not get the oxygen they need to function—they’ll be damaged, and fail. And when your kidneys fail, they don’t remove fluid from your vasculature, and with that increased fluid in your vasculature, your blood pressure will rise again drastically…..bad cycle to be in.

    5. By Kim W on Dec 28, 2011 | Reply

      I can’t tell you exactly but i can tell you about the elderly patients that were clients of mine. They had diabetes and their blood pressure was high and they developed kidney disease. So your talking dialysis visits 2x/wk. Then your talking about the only protein they can really digest, boiled eggs. It’s not a good life needing assistence bathing etc. Talk to your doc and get excerise avoid alcohol, get that b/p under control and eat right. Don’t go there. These people go fast.

    6. By Mrs. Doubtfire on Dec 31, 2011 | Reply

      It doesn’t. The rise in diastolic pressure associated with renal failure is a symptom, not the cause of kidney failure.

      What actually happens is that renal failure impairs the ability to allow blood to flow through the blood vessels of the kidney, presenting a greater resistance to flow. This causes a rise in the total resistance of the peripheral arteries, but since cardiac output remains unchanged, the product of the two (CO X TPR) rises. This is seen as an increase in diastolic pressure.

      You’ll observe lots of “thumbs down” ratings on this from people who misinterpret the mechanism. Take no notice; I don’t take any.

    7. By avsubbarao on Jan 3, 2012 | Reply

      Damage to the glomeruli

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