DESIGN: This is a descriptive study of urodynamic parameter and urethral pressure profilometry before and after operation. All the patients were followed at least 24 months after surgery.
METHODS: A total of 63 patients with successful anti-incontinence surgery were recruited to this study. Thirty-eight women had received a modified Burch colposuspension (MBC) before 1998, to stabilize the bladder neck and the anterior vaginal wall. Twenty-five cases had undergone autologous pubovaginal slingplasty (PVS) procedure to elevate the backstop effect on the proximal urethra from 1998 to 2000. We compared the changes in parameters of the urethral pressure profilometry between these two groups immediately before and six months and 24 months after the operation. A student t test was used for statistical analysis and p<0.05 was considered the statistical significant level.
RESULTS: The mean age of the patients at PVS group was 52.5 years (range 32-70 years) and 45.5 years (range 31-61 years) at MBC group. Age and parity were not significant difference between two groups. The pressure transmission ratio (PTR) of the urethra increased significantly, in both groups, in the postoperative evaluation. Patients who had the MBC procedure showed an increased PTR at quarter (Q) 1, Q2 and Q3 of the urethra. However, in the PVS group, the PTR increased only at Q3. The urethral closure pressure elevated significantly after the MBC procedure, but there were no significant changes after a PVS procedure.
CONCLUSION: Our results indicate that differences effects on the urethral pressure profilometry are evident in the PVS and MBC procedures. These two procedures should be considered in different anti-incontinence effect.
