Final answer:
If the bladder outlet is fully obstructed, it can lead to a condition called urinary retention, which causes a backflow of urine into the kidneys. This can result in kidney damage and dysfunction.
Step-by-step explanation:
If the bladder outlet is fully obstructed, it can lead to a condition called urinary retention. In urinary retention, the bladder becomes distended and unable to empty properly. This can cause a backflow of urine into the kidneys, leading to hydronephrosis, a condition where the kidneys become swollen and damaged due to the increased pressure. If left untreated, it can result in kidney dysfunction or even kidney failure.