heyyy....i have a question for u......

Why should a fall in blood pressure sometimes lead to kidney failure ? ? ?



... thanks,
gaby xxx have a nice day..

biohazard

Well, a fall in blood pressure can lead to the failure of many organs and even death. You don't quantify how low a blood pressure you're asking about, but we need a certain amount of pressure to keep our organs healthy and functioning...

asking

Kidneys clean the blood by having the blood pushed through a filtering system. It is the heart that creates the blood pressure. Plus the blood vessels expand or contract to increase or decrease blood pressure. And the kidneys can take out more or less fluid to alter total blood volume, which also influences blood pressure.

I would guess (and this is only a guess) that if the blood pressure falls too low, the blood isn't pushed into the kidneys properly.

The kidneys themselves secrete hormones that help regulate blood pressure. But if there's major blood loss and no increase in fluid--drinking water, plasma iv-- there's only so much the body can do to compensate for the drop in total blood volume. The heart needs something to pump, and the the blood has to be pushed through the kidneys.

KeepItSimpleStupid

Think of a sideways paper towel and an eye dropper. Fill the dropper with water and try to push a drop through. Then push the whole bulb. At some point the paper towel filters, the low limit and at another point the paper towel breaks. The high limit.

When it's slow, no filtering is being done and when it's operating close to high, they may fail prematurely.