Background
Urinary retention and bladder distention can lead to urinary
tract infection. The excess drainage tubing in a urine
drainage system will droop and form a generally U-shaped
loop (a dependent loop) where urine will collect. If the urine is
allowed to collect, the meniscus on the bag side will rise higher
than the bladder-side meniscus, indicating back-pressure
that impedes bladder emptying