Intermittent versus indwelling urinary catheterization in older female patients.

Objectives: To compare the use of intermittent and indwelling catheterization in older female patients with urinary retention.

Methods: A randomized, 2-week prospective study in a geriatric rehabilitation ward. Female patients of age 65 years and older with post-voiding residual urine volume (PVRU) persistently > or = 300 ml were randomly assigned to one of the two groups: intermittent catheterization (IMC group, n=36) and indwelling catheterization (IDC group, n=45). The primary outcome was the proportion of subjects being catheter-free and had a PVRU < 150 ml on day 14. The secondary outcomes were the time to become catheter-free and the rate of bacteriuria on day 14.

Results: Sixteen out of 27 (59.3%) in the IMC group versus 27 out of 39 (69.2%) in the IDC group achieved the primary outcome on day 14 (P=.403) without significant difference in the PVRU. The IMC and IDC groups took a mean of 8.6+/-3.3 and 9.2+/-4.0 days to become catheter-free, respectively (P=.609). Fourteen out of 22 (63.6%) in the IMC group versus 21 out of 34 (61.8%) in the IDC group had bacteriuria on day 14 (P=.888).

Conclusion: Given the similar success rate of regaining bladder voiding function, the similar rate of bacteriuria and considering that the IMC group only underwent a median of 3 times of intermittent catheterization, we believe that the approach of intermittent urinary catheterization when required would be justified in managing elderly female urinary retention in rehabilitation ward as the presence of indwelling catheters would hinder rehabilitation and adversely affect patient quality of life.