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Analysis of patient and technical factors associated with midurethral sling mesh exposure and perforation
David J Osborn1, Roger R Dmochowski, Catherine J Harris
1Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Objectives:
To evaluate the technical and patient characteristics associated with the development of mesh perforation and exposure in patients after midurethral sling surgeries.
Methods:
After a retrospective review of referred patients, the risk of mesh perforation of the urinary tract over exposure in the vagina was analyzed with multivariate logistic regression, adjusting for the possible predictors of age, body mass index, smoking status at the time of mesh placement, presence of diabetes, type of sling placed, type of surgeon and trocar injury at the time of mesh placement.
Results:
A total of 77 women were identified, 27 with mesh perforation and 50 with mesh exposure. The patients' average body mass index was 29.2, and 13% were diabetic. Nine (33%) patients in the perforation group and two (4%) patients in the exposure group had evidence of trocar injury to the bladder or urethra at the time of mesh placement (P < 0.001). After multivariate logistic regression analysis, trocar injury (odds ratio 25.90, 95% confidence interval 2.84-236.58, P = 0.004) and diabetes (odds ratio 9.90, 95% confidence interval 1.1.25-78.64, P = 0.03) were associated with an increased risk of mesh perforation. Increased body mass index (odds ratio 0.88, 95% confidence interval 0.77-0.99, P = 0.05) was associated with a decreased risk of mesh perforation. Finally, postoperative hematomas and blood transfusions occurred more commonly in the mesh perforation group (15% vs 0%, P = 0.01).
Conclusions:
Trocar injury, diabetes and bleeding complications at the time of surgery are associated with higher risk of mesh perforation in patients undergoing midurethral sling placement.
Insights
Trocar injury during midurethral sling surgery significantly increases mesh perforation risk. Diabetes also elevates risk, while higher BMI may offer protection, highlighting key factors in surgical complications.
Area of Science:
- Urology
- Gynecology
- Surgical Complications
Background:
- Midurethral sling procedures are common for stress urinary incontinence.
- Mesh-related complications, including perforation and exposure, can occur post-surgery.
- Identifying risk factors is crucial for patient safety and surgical technique refinement.
Purpose of the Study:
- To investigate technical and patient-specific factors linked to mesh perforation and exposure after midurethral sling surgery.
- To analyze the comparative risk between urinary tract perforation and vaginal mesh exposure.
- To identify predictors associated with increased risk of mesh perforation.
Main Methods:
- Retrospective review of referred patients undergoing midurethral sling procedures.
- Multivariate logistic regression analysis to assess risk factors.
- Adjusted analysis included age, BMI, smoking, diabetes, sling type, surgeon type, and trocar injury.
Main Results:
- Trocar injury during placement was strongly associated with increased mesh perforation risk (OR 25.90, P=0.004).
- Diabetes also correlated with a higher risk of perforation (OR 9.90, P=0.03).
- Higher body mass index showed a trend towards decreased perforation risk (OR 0.88, P=0.05).
- Postoperative hematomas and blood transfusions were more frequent in the mesh perforation group.
Conclusions:
- Trocar injury and diabetes are significant risk factors for mesh perforation following midurethral sling placement.
- Bleeding complications during surgery are also linked to a higher risk of mesh perforation.
- Surgical technique and patient comorbidities play a critical role in midurethral sling outcomes.
