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Why Does Urine Output Decrease after Kidney Dialysis

Why Does Urine Output Decrease after Kidney DialysisIt is not rare for dialysis patients to complain of decreased urine output. Dialysis is the quickest way to get polluted blood cleaned in several hours and for this reason, it is the most commonly used medical methods among kidney failure patients. However, why does urine output decrease after kidney dialysis? Is it one of the side effects?

Actually, decrease of urine output is a bad sign for dialysis patients as it means kidney function keeps declining. Dialysis is the process of filtering blood outside the body with a medical machine. Normally, blood should be filtered by kidney and during this period, harmful substances and unwanted fluid are removed out of the body as urine. However, in dialysis, blood is made out of the body and filtered with a machine, which makes bloodstream in kidney reduce. Consequently, urine output decreases.

We say decrease of urine output is a bad sign for dialysis patients, as it is bad for residual kidney tissues. Healthy kidney serves us as a filter and while it cleanses blood, it can get necessary nutrients and oxygen from blood, which helps our kidney tissues keep alive and strong. However, when bloodstream in kidney decreases, healthy kidneys fail to get oxygen and nutrients from blood. As a result, they become necrotic. That is why we say decrease of urine output means kidney function is declining.

Our body removes harmful substances through urine, so when urine output decreases, harmful substances build up in the body. That explains why impairment of kidney function is always accompanied with elevation of serum creatinine level and BUN (Blood Urea Nitrogen) level.

Lastly, dialysis is a way to cleanse blood, but not the only option when kidneys shut down. In kidney failure, to protect residual kidney function and avoid decrease of urine output, we can try alternative treatment, instead of dialysis. If you are interested in learning more about alternative treatment for kidney failure, please leave us message or contact online doctor.

Tag: Dialysis

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