Urinary retention on an acute geriatric hospitalisation unit: prevalence, risk factors and the role of screening, an observational cohort study.

Purpose: Urinary retention (UR) is common in older patients. The aim of this observational cohort study was to measure the prevalence of UR in patients aged ≥ 75 years on admission to an acute geriatric hospitalisation unit and to determine which at risk group would benefit from screening.

Methods: Post-void residual volumes (PVR) were measured within 3 days of admission with an ultrasound bladder scan.