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Lasix Renal Scan

A lasix renal scan takes pictures of the kidneys, ureters and bladder to see if they're properly formed and working together correctly.

Kidneys filter and clean the blood to produce urine. Urine passes out of the kidneys down through the ureters and into the bladder. When the bladder is full the urine passes out of the body through the urethra.

If these parts don't work as they should, your doctor will choose a treatment method best suited for your child.

Lasix Renal Scan: What to Expect

Children must lie very still for the entire test. You can stay with your child to provide company and support.

Your doctor may give your child medication, called sedation, to help them fall asleep if they're having trouble lying still. This is usually given by mouth, and it's not the same thing as general anesthesia. Small children may require a catheter before the test.

A nurse injects a radioactive fluid into your child's vein. The fluid travels through the kidneys, ureters and bladder. It gives off invisible rays seen by a special camera placed close to the body. The camera records the rays as pictures. Your doctor then gives your child the Lasix medication to help the kidneys empty quickly. 

How Long Does the Test Take?

It takes about 1-2 hours to take the pictures. It may also take an hour to prepare your child for the test.

After the test, your child will remain in the recovery area. Your doctor will review the test results with you.

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