Underactive bladder (UAB)
Underactive bladder substitutes the old term, “lazy bladder”. This condition is characterized by insufficient or unsustained detrusor contraction during emptying. Children with UAB do not feel that their bladder is full and needs emptying, resulting in incontinence due to overflow. Children may demonstrate infrequent micturition and an interrupted flow pattern. They need to strain during voiding and use high intra-abdominal pressures to initiate, maintain, or complete voiding. The residue after voiding is usually so large that recurrent UTIs occur. A diagnosis of UAB is usually confirmed with urodynamics.