Comparison of delayed absorbable suture v nonabsorbable suture for treatment of incompetent cervix

This is a retrospective study of McDonald cerclages comparing absorbable su ture v. nonabsorbable suture and showing no adverse outcomes associated wit h the absorbable cerclage group. Objective: To compare the efficacy of traditional nonabsorbable suture to d elayed absorbable suture for use in McDonald cervical cerclage. Study design: A retrospective analysis was conducted examining all cerclage procedures over a one year interval, from 7/01/97 until 6/03/98. Cases wer e stratified by the type of suture material, specifically nonabsorbable ver sus delayed absorbable. Demographic data, as well as selected perinatal out comes were analyzed for each group. Statistical analysis was performed usin g Chi-square and Fishers Exact test for categorical data, and the Student t -test for continuous variables. A p < .05 was considered statistically sign ificant. Results: Eighteen patients who underwent a McDonald cerclage were analyzed. In fourteen a nonabsorbable cerclage was utilized and in four an absorbabl e cerclage was used. The mean gestational age at delivery for the nonabsorb able suture group was 36.9 weeks compared to 39.2 weeks for the patients re ceiving an absorbable cerclage (P = 0.2). The mean birth weights for each g roup were 2732 +/- 183 grams and 3616 +/- 343 grams, respectively (P = 0.04 ). Conclusion: Based on our findings delayed absorbable suture material may be a reasonable alternative during cerclage placement, with the added benefit of spontaneous degradation versus surgical removal.