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Polycystic Kidney Disease& Kidney Cysts

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PKD & Kidney Cysts

Polycystic kidney disease (PKD) is a group of disorders that result from the formation and progressive enlargement of cysts in the kidneys without dysplasia, usually leading to renal failure.

BUN Level for Dialysis

2014-06-13 07:49

Patients usually require dialysis when the waste products in their body become so high that they start to become sick from them. The wastes include creatinine and blood urea nitrogen (BUN). Doctors will take a blood test to see the BUN level and then discuss if you need dialysis. Do you know what is blood urea nitrogen and what a BUN level needs dialysis?

What is blood urea nitrogen?

Urea nitrogen is a natural byproduct of protein consumption. Kidneys are the main discharger of urea.

Why does blood urea nitrogen level increase?

The urea is reabsorbed in the renal tubules after it is filtered by glomeruli. The faster of the urine speed is, the more urea is reabsorbed. In other words, the clearance rate of urea nitrogen reaches the highest level. People with kidney disease usually have little urine, and thus excessive urea nitrogen cannot be excreted. This kind of waste accumulates in the blood, resulting in high BUN level.

What is the BUN level for dialysis?

The normal range of blood urea nitrogen for healthy individuals is 7-20 mg/dL in adults, and 5-18 mg/dL in children. Patients on dialysis have higher BUN levels, usually 40-60 mg/dL. The nephrologist (kidney doctor) and dietitian will help determine whether the BUN is in the correct range.

Is dialysis a must because of high BUN level?

A high BUN usually means that kidney function is less than normal, but other factors may affect the BUN level. Bleeding in the intestines, congestive heart failure, and certain medications may make the BUN higher than normal. Sometimes, a high BUN level may also mean you are eating too much protein. Therefore, a high level of BUN not always indicates dialysis.

As BUN rises, symptoms of kidney disease may appear, such as a bad taste in the mouth, poor appetite, nausea, and vomiting. Dialysis may control those symptoms quickly and effectively, but it cannot solve the problem from the root.

To sum up, blood urea nitrogen level is not the determining factor, and dialysis is not the only way to reduce high BUN level. For more professional suggestions, please contact us right now.

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