Post-partum urinary retention: a comparison between two methods of epidural analgesia

Abstract

Objective: To compare two methods of epidural labor analgesia regarding the incidence of post-partum urinary retention. Study design: One thousand parturients who requested epidural analgesia for the relief of labor pain received, at random, either bupivacaine 0.25% with adrenaline 1:200 000 ( n = 500) or bupivacaine 0.125% with 10 μg sufentanil ( n = 500). During the same observation period all women with clinically significant urinary retention (> 500 ml, requiring indwelling catheter) were registered. Result: Altogether 30 3.364 parturients had clinically significant urinary retention. Twenty-seven of these had received epidural analgesia (EDA) (17 with bupivacaine/adrenaline and ten with bupivacaine/sufentanil, a non-significant differences). The number of parturients with urinary retention was highly increased following EDA ( 27 1000 ) as compared to those not receiving EDA ( 3 2364 ), P < 0.001 (Fisher's exact test). In patients with EDA and urinary retention there were no difference between the groups in the incidence of instrumental deliveries or vaginal/perirectal tears. All parturients regained normal bladder function. Conclusion: EDA significantly increased the risk of post-partum urinary retention but no difference was found between the two epidural techniques.