A member asked:

Why does kidney failure cause you to get fluid in your lungs?

2 doctors weighed in across 2 answers

No urine output: When the kidneys fail, the body loses the ability to excrete urine. Therefore a person in kidney failure who drinks fluid will not be able to excrete this fluid. Then this fluid will back up into the lungs.

Answered 7/5/2012

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Fluid Status: Kidneys are very important for fluid balance in the body. They filter our toxins and regulate your volume status (how much fluid you have in your body). When they fail the ability to loose water/fluid by way of your urinary system goes away and fluid buildup begins.

Answered 7/29/2018

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