Tag Archives: proteinuria in children

What is the proteinuria? 

Proteinuria is when protein goes in the urine. As the blood moves through the kidneys, the kidneys filter and remove waste products, excess fluids and salt. These waste products leave the body in the urine. Usually, no protein is found in urine as most proteins are too large to pass through the kidneys.

If your doctor finds protein in the urine of your child, this means that your child's kidneys may not be working as they should, possibly because of inflammation (swelling). Sometimes infection or chemicals damage the kidneys and this makes protein show up in urine.

If only a small amount of protein in the urine, your child probably has a benign (harmless) as orthostatic proteinuria (see below).If there is a lot of protein in the urine of your child a more serious kidney disease could be causing the problem.Proteinuria is painless. But when a large amount of protein present in urine protein level in the blood may drop. This can cause swelling of the eyelids, ankles and legs of your child. High blood pressure is another sign of this problem.

What are the symptoms of proteinuria?

Your doctor may ask you to collect a urine sample from your child 24 hours. The instructions for doing this at the end of this pamphlet. A collection of 24-hour urine allows your doctor to measure the protein in the urine. A special paper strip is dipped into the urine sample for the presence of protein in the urine.This test helps show how well your kidneys are working for your child. Your doctor may also do some blood tests.

What is orthostatic proteinuria?

Orthostatic proteinuria occurs in some older children and adolescents. The word orthostatic means "upright". The condition is known as "orthostatic proteinuria" because protein goes into the urine only when the child is standing.

Children with this condition have no kidney damage, but for some unknown reason, they lose protein into the urine during the day when active. At night, while they sleep, their kidneys do not let any protein into the urine. Your doctor diagnoses this harmless condition by checking two urine samples. The first is collected in the morning, right after your child gets up. The second sample is collected during the day. The samples were kept in separate containers. If your child has orthostatic proteinuria morning sample will not have protein, but the urine collected during the day will have protein in it.


How is proteinuria treated? 

If your child has orthostatic proteinuria or only small amounts of protein in the urine, no treatment is needed. Sometimes the doctor will check your child's urine in a couple of months to see if the amount of protein in the urine goes down. If the amount of protein in the urine does not change or there is more protein, your doctor may refer your child to a kidney specialist called a nephrologist. The nephrologist may perform a renal biopsy: a small piece of kidney tissue is removed with a needle and examined under a microscope. When your doctor determine what is causing the protein in the urine of his child, he can treat the problem.

There are a few simple things that can help your child regardless of what caused the kidney problem. Eating less salt can reduce the swelling. Medicine can control inflammation (swelling) of the kidneys that may be causing the protein to get into the urine. The medicine is usually given in a high dose at first and then a lower dose. Some children take a low dose of the drug for months or even years. It is important to follow your doctor's instructions about taking medication. It is also important to see your doctor for regular checkups.

Do I need to limit the activities of my child?

No. Although the protein in the urine may increase during exercise, this will not damage your child's kidneys. So that you do not need to limit your child's activities.

How do I collect urine for 24 hours?

In children who are trained to use the toilet you should start the collection on a day when your child does not go to school, usually on Sunday. As soon as your child gets up in the morning, have him or her urinate into the toilet. This urine is not saved, just flush it down the toilet. Write down the exact time at which your child urinates. Children who are not trained to use the toilet usually go to the hospital for this test.

After that, each time your child needs to urinate, have him or her to do it in a special container that the doctor or the lab gives you. For girls, first collect the urine in the urine collection bag (urine "hat") and then pour it into the special container. You do not need to dial the number of times that these urine samples are collected. Be sure to wash hands after handling the container.

It is important to collect all the urine your child produces all day and all night. The next morning, wake your child up at the same time as you did yesterday. Have your child urinate into the container one last time. This ends the collection of 24 hours.Now, enter the date and time the container label. Bring the container to the lab that day.

Since bacteria can multiply in the urine at room temperature, it is important to keep urine collection refrigerated during and after delivery to the laboratory.