Post-operative urinary retention in a general surgical population

Abstract

Background and objective: Post-operative urine retention is a frequent and serious complication. The aims of this study were to evaluate the prevalence of post-operative urinary retention in a general surgical population and to identify the perioperative risk factors for developing this condition.

Methods: Data were obtained from 334 consecutive adult surgical patients, operated without a urethral catheter placed from 1 June to 13 July 2006. A bladder scan was performed within 30 min of arrival to the recovery ward, in case of bladder symptoms, and before referral to the surgical ward. Post-operative urinary retention was defined as a bladder volume above 600 ml and insufficient voiding within 30 min.

Results: Mean age (SD) was 58.6 years (± 16.6). One hundred and eighteen men (35.3%) and 216 women (64.7%) were included. The prevalence of post-operative urinary retention was 4.8%. Significant independent risk factors were diabetes mellitus (odds ratio, 5.9; 95% confidence interval, 1.760-19.882) and administration of atropine intraoperatively (odds ratio, 5.9; 95% confidence interval, 1.005-34.680).

Conclusion: The risk of developing post-operative urinary retention is approximately 5% in the present general surgical population studied, and co-existing diabetes mellitus and administration of atropine intraoperatively are pre-disposing factors.