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Stricture incidence related to suture material in hypospadias surgery
1Department of Urology, University of California, Davis, School of Medicine, Sacramento 95817, USA.
Insights
Rapidly absorbing sutures significantly improve hypospadias surgery outcomes, reducing complications like urethral strictures. Prolonged absorbable sutures, such as polydioxanone (PDS), are linked to higher complication rates and should be avoided in urethral repairs.
Area of Science:
- Urology
- Pediatric Surgery
- Surgical Materials Science
Background:
- Hypospadias repair involves urethral anastomosis, a critical step for surgical success.
- Suture material choice can influence complication rates, including strictures and fistulas.
- Understanding the absorption profile of sutures is vital for optimizing surgical outcomes.
Purpose of the Study:
- To evaluate complication rates following hypospadias surgery.
- To compare outcomes based on the absorption rate of sutures used for urethral anastomosis.
- To determine the optimal suture type for pediatric hypospadias repair.
Main Methods:
- A retrospective analysis of 117 boys undergoing hypospadias correction over a 7-year period.
- Stratification of patients based on suture material: chromic, polydioxanone (PDS), and polyglycolic acid (PgA).
- Comparison of complication rates (strictures, fistulas) between rapid/intermediate absorbable (chromic/PgA) and prolonged absorbable (PDS) suture groups.
Main Results:
- Higher success rates (76.1%) were observed with rapid/intermediate absorbable sutures (chromic/PgA) compared to prolonged absorbable sutures (PDS) (50.9%).
- Urethral stricture rates were significantly lower with chromic/PgA sutures (6.8%) versus PDS (23.6%).
- Polydioxanone (PDS) sutures showed delayed absorption, persisting up to 7 months post-surgery.
Conclusions:
- Sutures with rapid or intermediate absorption profiles are superior for hypospadias surgery.
- The delayed in vivo absorption of polydioxanone (PDS) makes it unsuitable for small-caliber urethral anastomoses.
- Choosing appropriate suture materials is crucial for minimizing complications in hypospadias repair.
Purpose:
To report the complication rates after hypospadias surgery, with stratification according to the type of suture used for the urethral anastomosis (rapid/intermediate absorbable v prolonged absorbable.)
Material And Methods:
During a 7-year period (1986 to 1992), 117 boys aged 5 to 124 months (mean, 14) underwent surgical correction of hypospadias. The urethral anastomoses were performed with chromic sutures before 1987 (n = 15), with polydioxanone (PDS) between 1987 and 1990 (n = 46), and with polyglycolic acid (PgA) after 1990 (n = 56). The patients were separated into two groups: those whose operations were performed before 1987 and after 1990 (using chromic or PgA sutures), and those whose surgery occurred in the intervening 3 years (using PDS). A successful result was defined as good cosmesis without urethral stricture or urethrocutaneous fistula on long-term follow up (mean follow-up period, 15.9 months).
Results:
Of the cases that had PgA or chromic sutures, 76.1% were corrected in a single operation, as opposed to 50.9% when PDS was used (P = .002). In the chromic/PgA group, 6.8% had strictures, compared with 23.6% of the PDS group (P < .02). This contrast was most evident in cases with pedicled tube flaps; strictures occurred in 43.8% of the PDS group but in only 9.5% of the chromic/ PgA group (P < .02). There was no significant difference in the incidence of postoperative fistulas between the two groups. In some patients, the PDS sutures remained present in the urethra, without absorption, up to 7 months after the initial repair.
Conclusion:
Sutures with rapid or intermediate absorption rates provide the best results for hypospadias surgery. The extreme delay in in vivo absorption of polydioxanone should preclude its use as an interrupted suture in small-caliber urethral anastomoses.