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. 2018 Nov 26:2018:6934747.
doi: 10.1155/2018/6934747. eCollection 2018.

Predictors for De Novo Overactive Bladder after Readjustable Mid-Urethral Sling Procedure in Women with Stress Urinary Incontinence due to Intrinsic Sphincter Deficiency

Joo Hyun No  1 , Kyung Hwa Choi  1 , Dae Keun Kim  2 , Tae Heon Kim  1 , Seung Ryeol Lee  1
Affiliations

Predictors for De Novo Overactive Bladder after Readjustable Mid-Urethral Sling Procedure in Women with Stress Urinary Incontinence due to Intrinsic Sphincter Deficiency

Joo Hyun No et al. Biomed Res Int. .

Abstract

Purpose: This study identified noninvasive factors that predict overactive bladder (OAB) after readjustable mid-urethral sling surgery (Remeex system) in women with stress urinary incontinence (SUI) due to intrinsic sphincter deficiency (ISD).

Materials and methods: We retrospectively reviewed the medical records of 130 women with SUI due to ISD [Valsalva leak-point pressure (VLPP) <60 cm H2O] who underwent the Remeex procedure between February 2011 and March 2017. Patients were classified according to OAB symptoms before and 6 months after the Remeex procedure: Group 1, without preoperative and postoperative OAB (n=46); Group 2, without preoperative OAB and with postoperative OAB (de novo OAB, n=15); Group 3, with preoperative OAB and without postoperative OAB (n=25); Group 4, with preoperative and postoperative OAB (n=44). Noninvasive clinical and urodynamic factors were evaluated as predictors of de novo OAB.

Results: The four groups significantly differed with respect to age (p=0.036), peak urinary flow rate (PUFR) one month after surgery (post-PUFR, p=0.001), and postvoid residual (PVR) one month after surgery (post-PVR, p=0.005). No significant differences were detected for body mass index, diabetes, multiparity, menopause, previous hysterectomy, previous incontinence surgery, previous pelvic organ prolapse surgery, pyuria, preoperative PUFR, preoperative PVR, maximal cystometric capacity, VLPP, maximum urethral closure pressure, detrusor pressure at PUFR, and detrusor overactivity (p>0.05). Post-PUFR decreased significantly compared with preoperative PUFR in Groups 1, 2, and 4 (p=0.002, p=0.001, and p=0.001, respectively). Pairwise comparisons of post-PUFR and post-PVR revealed statistically significant differences between Group 2 and other groups (p<0.0125). Multivariate logistic regression analyses showed that post-PUFR was the only significant predictor of de novo OAB (odds ratio = 0.823, 95% confidence interval 0.727-0.931, p=0.002).

Conclusions: Reduced PUFR after the Remeex procedure is a promising predictor of risk for de novo OAB. This metric is noninvasive and easy to measure.

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Figures

Figure 1
Figure 1
Study cohort and distribution of women according to the presence of overactive bladder (OAB) symptoms before and 6 months after the Remeex procedure. Group 1, without preoperative and postoperative OAB; Group 2, without preoperative OAB and with postoperative OAB; Group 3, with preoperative OAB and without postoperative OAB; Group 4, with preoperative and postoperative OAB.
Figure 2
Figure 2
Comparison of changes in peak urinary flow rate (PUFR) between the four groups before and 1 month after the Remeex procedure. The post-PUFR decreased significantly compared with pre-PUFR in Groups 1, 2, and 4. ∗p <0.05.
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