We analysed 499 male patients with LUTS (mean age 62,6 years). Fifty – nine (11,8%) patients had long-term urinary catheters and 4 (0,8%) performed clean intermittent catheterization (CIC). 225 patients (45,1%, Group A) showed NDF and 274 patients (54,9% Group B) DO, 194 of them (70,8%) have phasic detrusor contractions and 80 (29,2%) have pre-voiding detrusor overactivity.
In Group A and B respectively, bladder capacity was 420,3 mL and 298,4 mL (p<0,05), PVR was 90,0mL and 57,0mL (p<0,05) and voiding efficiency was 78,6% and 81,6% respectively.
During the voiding phase,177 patients (40,7%) were obstructed (BOOI>40),100 (23,0%) were equivocal (20<BOOI>40) and 154 (35,4%) were not obstructed (BOOI<20).
Fifty-nine (26,2%) and 119 (43,3%) patients showed BOO in Group A and B, respectively (p<0,05).
Ninety-three (41,3%) and 94(34,3%) patients showed DU in Group A and B, respectively.
During the filling phase,179 (65,3%) patients of the group B showed a phasic DO, while 95 (34,7%) patients showed a pre – filling DO; their mean BCI was 116,8 and 117,0 respectively.