Background
Urinary retention is a recognised complication of laparoscopic surgery. Previous work showed an association with 4% icodextrin solution and urinary retention.

Aims
To determine the incidence of urinary retention following laparoscopic gynaecological surgery with or without the use of 4% icodextrin.

Methods
A prospective observational study of 147 women undergoing laparoscopic gynaecological surgery for benign pathology. Women had their planned laparoscopic procedure and either received icodextrin solution or nothing as determined by their treating surgeon at the time of the operation.

Results
From May 2011 to February 2012, 147 women were approached to participate in the study; of whom, 124 women were included: 62 received icodextrin and 62 did not. The women in the non‐icodextrin group were significantly older (P = 0.007) and had a higher BMI (P = 0.03) than those in the icodextrin group. Following surgery, 27/124 (21.8%) women had post‐operative urinary retention. Icodextrin was associated with significantly more urinary retention (P = 0.017), but did not extend hospital admission significantly (P = 0.14). The administration of icodextrin was associated with resection of moderate‐ or severe‐stage endometriosis involving multiple surgical sites, whereas women in the non‐icodextrin group were more likely to be having a hysterectomy.

Conclusions
In this non‐randomised study, there were significantly more women with post‐operative urinary retention when icodextrin was used; however, this did not contribute to an extended hospital admission. While there may be confounding factors, women receiving icodextrin should be warned of the possibility of urinary retention post‐operatively, but that this is unlikely to affect their stay in hospital.