Alfuzosin once daily facilitates return to voiding in patients in acute urinary retention.

PURPOSE

We confirmed the beneficial effect of the alpha1-blocker alfuzosin for the acute management of acute urinary retention (AUR) related to benign prostate hyperplasia (BPH), and further identified factors influencing the success of a trial without catheter (TWOC).

MATERIALS AND METHODS

A total of 360 patients presenting with a first episode of spontaneous AUR related to BPH underwent emergency catheterization and were then randomly and blindly assigned to receive 10 mg alfuzosin once daily or placebo at a ratio of 2:1 for 3 days. The primary efficacy criterion of this large study was the rate of successful TWOC within 24 hours after catheter removal. The influence of factors such as age, urine retention volume, fluid consumption, constipation and urinary tract infection on TWOC outcome was also assessed.

RESULTS

Successful TWOC was recorded in 61.9% of the 236 patients treated with alfuzosin vs 47.9% of the 121 receiving placebo (p = 0.012). Elderly patients (65 years or older) and patients with a drained volume of 1000 ml or greater had significantly greater chances of TWOC failure (success vs failure OR 0.309, 95% CI 1.182 to 0.514 and OR 0.361, 95% CI 0.225 to 0.571, respectively). Nevertheless, even in the presence of these 2 factors 10 mg alfuzosin once daily almost doubled the likelihood of successful TWOC (OR 1.98, 95% CI 1,226 to 3,217). Alfuzosin (10 mg) once daily was well tolerated.

CONCLUSIONS

Alfuzosin (10 mg) once daily significantly improved the rate of successful TWOC in patients with AUR related to BPH, even in elderly patients and those with a large drained volume who were at increased risk for TWOC failure. This should contribute to decrease the morbidity and mortality associated with emergency surgery and avoid the discomfort and potential morbidity associated with an in situ catheter.