Assessment of voiding difficulties in men with idiopathic Parkinson ’s disease

Distinction between the impact of Parkinson’s disease (PD) or age-related lower urinary tract disorders such as benign prostatic hyperplasia (BPH) can be difficult in patients reporting voiding difficulties (VD). This study aimed to describe the causes of VD in men with PD, and to compare clinical and urodynamic parameters according to the mechanism. This retrospective study included men with PD reporting VD, for whom pressure-flow studies were performed. Findings of urodynamics, voiding cystourethrogram (VCUG), and prostatic weight were collected. BPH was defined as a prostatic weight >30 cc. Urodynamic obstruction and underactivity were defined using the Bladder Outlet Obstruction Index >40 and the Bladder Contractility Index