Management of stress urinary incontinence

Complications and re-operations after tension-free vaginal tape operation in women with stress urinary incontinence

INTRODUCTION AND HYPOTHESIS

We evaluate intraoperative and short-term postoperative (≤ 3 months) complications and long-term re-operations (up to 6 years) after tension-free vaginal tape (TVT) operation in women with stress urinary incontinence (SUI).

METHODS

Data from 446 women undergoing TVT operation between 2012 and 2016 at a tertiary referral center was retrospectively collected. Data included patient baseline demographics, information from the TVT operation and the following postoperative period, and scores from patient questionnaires [the International Consultation of Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) and Patient Global Impression of Improvement (PGI-I)]. Collected data were investigated for incidence of complications and re-operations, postoperative improvement in patient questionnaires, and association between complications and baseline patient demographics.

RESULTS

The only intraoperative complication was bladder perforation (2.0%). Postoperative complications included: infection (0.7%), hematoma (0.9%), bleeding (0.2%), pain (0.9%), erosion of the vaginal mucosa (1.1%), persistent SUI (0.7%), and voiding dysfunction > 24 h (10.3%). Re-operations included: operation due to infections (0.4%), incontinence surgery for persistent SUI (0.4%), revision for tape erosion (1.1%), tape mobilization (3.6%), and tape division (0.2%). A significant reduction in urinary incontinence symptoms was observed in the ICIQ-UI SF and PGI-I. The reduction in ICIQ-UI SF did not vary significantly between patients with and without complications. No association between complications and baseline patient demographics was found.

CONCLUSION

This study demonstrated high safety and efficacy of the TVT operation with only minor short-term complications and few long-term re-operations. The ICIQ-UI SF improved significantly postoperatively and was not statistically significantly affected by the occurrence of complications.

Potential therapeutic role of punicalagin against mechanical-trauma-induced stress urinary incontinence via upregulation of Nrf2 and TGF-β1 signaling : Effect of punicalagin on mechanical trauma induced SUI

INTRODUCTION AND HYPOTHESIS

We investigated the effect of punicalagin (PUN; 2,3-hexahydroxydiphenoyl-gallagyl-D-glucose), on mechanical-trauma-induced stress urinary incontinence (SUI) in mouse and the mechanisms underlying any effects.

METHODS

Ninety virgin female C57BL/6 mice were randomized into six groups: five groups underwent vaginal distention (VD) for 1 h and leak-point pressure (LPP) was measured on the 1st, 3rd, 7th, 14th, and 28th day following (VD groups 1 d, 3 d, 7 d, 14 d, and 28 d). The sixth group was a noninstrumented control (NC) group. Then, 75 virgin female C57BL/6 mice were randomized into five groups: a VD group (that just underwent VD) and an NC group were orally administered saline every day for 7 days; and three VD + PUN groups that underwent VD and were orally administered PUN respectively at 2.5, 5, and 10 mg/kg every day for 7 days. LPP was tested on the day 7, then all mice were sacrificed and their urethras and anterior vaginal walls harvested for Masson staining, immunohistochemistry study, Western blot analysis, and quantitative polymerase chain reaction (qPCR).

RESULTS

LPPs after VD were significantly lower than the NC group, and the LPPs of mice on days 14 and 28 day after VD were significantly higher than on the days 1, 3, and 7. PUN significantly improved VD-induced drops in LPP and alleviated VD-induced decrease of collagen I, collagen III, α-smooth muscle actin (SMA), transforming growth factor (TGF)-β1, and p-Smad3, nuclear factor-erythroid 2 p45-related factor 2 (Nrf2), and glutathione peroxidase (GPx1) protein levels, and increase of 8-hydroxydeoxyguanosine (OHdG) in urethra and anterior vaginal wall. PUN also up-regulated the expression of manganese superoxide dismutase (MnSOD), whereas protein levels of Smad 2, p-Smad2, and Smad3 were not changed.

CONCLUSIONS

PUN exerts certain therapeutic effect on mechanical-trauma-induced SUI in mice, which might be through the activation of TGF-β1/Smad3 and Nrf2/antioxidant response element (ARE) signaling activation.