Descriptive Profile Outcomes between Closed and Open Drainage Systems Following Urethroplasty
Piyawan Chiengkriwate MD*, Wararat Chamnanniam BNS*, Nopporn Ketwilai BSc, MPA*
Affiliation : * Pediatric Surgery Unit, Department of Surgery, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
Background : An indwelling urinary catheter or urethral stent are standardly used following a urethroplasty to prevent
post-operative urinary retention. There are both closed drainage system (CDS) and open drainage system (ODS) available.
Objective : The study was designed to determine the outcomes between post-operative CDS and ODS.
Material and Method: Fifty-seven hypospadias patients with 66 urethroplasties, performed by a single surgeon, were
assessed. During the 40-month study period, the operative outcomes relative to the technique of both urinary catheter
drainage systems were evaluated for length of hospital stay (LOS), cost of hospitalization, and post-operative complications.
Results : CDS and ODS drainage systems were performed in 32 and 34 operations, respectively. The patient characteristics,
the surgical profiles, and post-operative complications were not statistically significant. The CDS/ODS group had median
LOS (range) of 9 (1 to 22)/2 (1 to 6) days, respectively, and cost of hospitalization (SD) of 22,908 (4,455)/18,408 (3,848) Bahts
respectively. Both had statistical significance, p<0.001. The subgroup of 26 posterior hypospadias and TIP urethroplasties
were also evaluated.
Conclusion : Patients with hypospadias given an open drainage system after urethroplasty have a higher rate of early
discharge, lower cost of hospitalization, and a lower rate of wound infection.
Keywords : Drainage system, Hypospadias, Urethroplasty, Urinary catheter
