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There are two types of vesicoureteral reflux, or VUR. Primary vesicoureteral reflux is the most common type and happens when a child is born with a defect at the ureterovesical junction, which is the spot where the ureter enters the bladder, which also acts as a valve preventing urine from pushing back from the bladder into the ureter.
Normally about two centimeters of the ureter sticks into the bladder wall, allowing urine to flow into the bladder, but as the bladder fills up and stretches, it also stretches that section of the ureter and presses it against the top of the bladder, causing the ureter to close shut.
If the tube isn’t long enough though, that small piece of the ureter doesn’t stretch very much, and it stays open even when the bladder fills with urine. In that situation, as the bladder pressure builds with more urine, it starts to go back up the ureters.
Vesicoureteral reflux is a condition where the pressure in the urinary outflow tract increases and urine gets pushed back up into the ureters or kidneys. There are two types of vesicoureteral reflux: primary and secondary.
Primary vesicoureteral reflux is the most common type and happens when a child is born with a defect at the ureterovesical junction, which acts as a valve preventing urine from pushing back from the bladder into the ureter. Secondary vesicoureteral reflux is caused by an acquired condition or disease that causes a blockage in the urinary tract.
The disease often leads to urinary tract infections that can cause renal inflammation and scarring. Treatment options depend on the severity of the condition and may include antibiotics to prevent infections and surgery to correct the reflux.
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