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Post-partum urinary retention: a comparison between two methods of epidural analgesia
C I Olofsson1, A O Ekblom, G E Ekman-Ordeberg
1Department of Anesthesiology and Intensive Care, Karolinska Hospital, Stockholm, Sweden.
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 micrograms 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.