What are the complications of Urine Blockage in Newborns ?
When a defect in the urinary tract blocks the flow of urine, the urine backs up and causes the ureters to swell, called hydroureter, and hydronephrosis.
                
Hydronephrosis is the most common problem found during prenatal ultrasound of a baby in the womb. The swelling may be easy to see or barely detectable. The results of hydronephrosis may be mild or severe, yet the long-term outcome for the childs health cannot always be predicted by the severity of swelling. Urine blockage may damage the developing kidneys and reduce their ability to filter. In the most severe cases of urine blockage, where little or no urine leaves the babys bladder, the amount of amniotic fluid is reduced to the point that the babys lung development is threatened.
                
After birth, urine blockage may raise a childs risk of developing a UTI. Recurring UTIs can lead to more permanent kidney damage.