Comparison of Burch and Lyodura sling procedures for repair of unsuccessful incontinence surgery

Objective: To assess the effectiveness and late postoperative morbidity of the Burch procedure and the sling procedure for the treatment of recurrent urinary stress incontinence after vaginal hysterectomy and anterior repair. Methods: Clinical, urodynamic, and sonographic examinations were done on 77 women suffering with recurrent urinary stress incontinence. The women were randomized to two groups, modified Burch colposuspension and lyophilized dura mater sling surgery; 72 women were reexamined 32-48 months after these procedures. Results: The cure rate at 32-48 months' follow-up was 86% for the Burch procedure and 92% for the sling. Women who had had the sling procedure demonstrated a clear decrease in maximal bladder capacity, from 330 to 240 mL (P < .05). In both groups, stress profiles demonstrated a shift of maximal pressure point toward the proximal urethra and a significant improvement in pressure transmission (P < .05). The postoperative patients who had persistent incontinence were found to have insufficient elevation of the bladder neck (less than 10 mm). The uroflow examination showed an increase of urination time in both groups. The incidence of bladder problems was 10% with the Burch procedure and 29% with the sling procedure; however, 13% of the Burch group developed rectoceles. Conclusion: Both procedures offer a high rate of success. We believe that the sling surgery should be used only in certain special cases because of its higher rate of complications, but that posterior vaginal repair should be considered after modified Burch colposuspension because of the possibility of rectocele and enterocele.