Is vaginal hysterectomy a risk factor for urinary incontinence at long-term follow-up?

Associations between hysterectomy and pelvic floor disorders: a systematic review and meta-analysis

OBJECTIVE

Hysterectomy is the second most common surgery performed among women in the United States. The associations between hysterectomy and the risk of pelvic floor disorders remain unclear. The objective of this study is to systematically review the associations between hysterectomy and the likelihood of pelvic floor disorders.

DATA SOURCES

A systematic search of Medline and Embase from inception to October 11, 2024, was performed without language restrictions. The systematic review was registered in The International Prospective Register of Systematic Reviews (CRD42023443210).

STUDY ELIGIBILITY CRITERIA

Studies included randomized controlled studies and nonrandomized comparative studies (that reported adjusted analyses) of adult female individuals aged ≥18 years old who underwent a hysterectomy through any route for benign indications. At least 1 year of follow-up after hysterectomy was required. Studies of individuals undergoing concomitant surgery for pelvic floor disorders were excluded.

STUDY APPRAISAL AND SYNTHESIS METHODS

Twelve investigators independently screened each abstract and potentially eligible full-text article in duplicate. Data extraction, risk of bias assessment, and strength of evidence grading were conducted using standard instruments. Meta-analyses were performed using random-effects models. Outcomes included pelvic organ prolapse, urinary incontinence (nonspecific, mixed, and stress), overactive bladder, voiding dysfunction, fecal incontinence, and defecatory dysfunction. Results were stratified by time since hysterectomy (≤10 years vs >10 years).

RESULTS

We included 60 studies (8 randomized controlled trials, 20 cohort studies, and 32 case-control studies) with 3,567,848 participants. In the first 10 years, hysterectomy was associated with higher likelihood of (nonspecific) urinary incontinence (effect size 1.29, 95% confidence interval 1.11-1.47; 25 studies), stress urinary incontinence (effect size, 1.31; 95% confidence interval, 1.06-1.56; 14 studies), overactive bladder (effect size, 1.41; 95% confidence interval, 1.25-1.58; 16 studies), and mixed urinary incontinence (effect size, 1.62; 95% confidence interval, 1.40-1.85; 3 studies). Beyond 10 years, hysterectomy was associated with higher likelihood of pelvic organ prolapse (effect size, 1.56; 95% confidence interval, 1.35-1.78; 6 studies) and stress urinary incontinence (effect size, 2.40; 95% confidence interval, 2.17-2.63; 5 studies).

CONCLUSION

Hysterectomy is associated with a statistically significant higher likelihood of urinary incontinence of all types within 10 years, as well as pelvic organ prolapse and stress urinary incontinence beyond 10 years after hysterectomy. It is important to discuss these risks at the time of counseling for hysterectomy with consideration of medical or nonhysterectomy treatment options if clinically acceptable.

The Risk of Stress Urinary Incontinence After Hysterectomy for Uterine Fibroids

PURPOSE

We evaluated the relationship between previous hysterectomy for uterine fibroids and subsequent stress urinary incontinence (SUI).

METHODS

This study analyzed national health insurance data. The hysterectomy group (aged 40 to 59) comprised patients who underwent hysterectomy for uterine fibroids between January 1, 2011 and December 31, 2014, and the control group (aged 40 to 59) comprised patients who visited a medical facility for a checkup during the same time span. One-to-one propensity score matching was performed to balance confounders. SUI was defined as the need for SUI surgery accompanied by a diagnosis code for SUI.

RESULTS

After matching, 81,373 cases (hysterectomy group) and 81,373 controls (nonhysterectomy group) were enrolled. The mean follow-up period was 7.9 years for the cases and 7.8 years for the controls. The incidence of anti-incontinence surgery was slightly but significantly higher in the cases than in the controls (2.0% vs. 1.7%, P<0.001). Compared to the control group, abdominal hysterectomy significantly increased the likelihood of anti-incontinence surgery both before (hazard ratio [HR], 1.235; 95% confidence interval [CI], 1.116-1.365) and after adjusting for confounders (HR, 1.215; 95% CI, 1.097-1.347). In contrast, laparoscopic hysterectomy, laparoscopic hysterectomy with adnexal surgery, and abdominal hysterectomy with adnexal surgery were not associated with an increased rate of anti-incontinence surgery. The significant association between abdominal hysterectomy and an elevated rate of anti-incontinence surgery persisted even after stratifying patients by age group.

CONCLUSION

Prior abdominal hysterectomy without adnexal surgery was associated with an increased incidence of subsequent anti-urinary incontinence surgery.

Patient-reported pelvic floor symptoms 5 years after hysterectomy with or without prolapse surgery

OBJECTIVE

The aim of this study was to evaluate the effect of hysterectomy with or without concomitant prolapse surgery on subject-reported pelvic floor disorders (PFD) with a 5-year follow-up.

STUDY DESIGN

This prospective longitudinal study was carried out in two Finnish central hospitals among 286 women who had undergone hysterectomy for benign reasons. The presence of urinary incontinence, urinary frequency, feeling of vaginal bulging, constipation and anal incontinence was evaluated at baseline, 1 and 5 years postoperatively. Analysis was performed on 256 (895%) patients who answered at least one of the follow-up questionnaires.

RESULTS

Hysterectomy with concomitant native tissue prolapse surgery significantly reduced urinary incontinence, urinary frequency, constipation and the feeling of vaginal bulging, and the results were maintained over the following five years. Plain hysterectomy reduced urinary frequency and the feeling of vaginal bulging but did not relieve urinary incontinence. Hysterectomy had no effect on anal incontinence. The total subsequent prolapse and/or incontinence operation rate was 2,7%, and was higher among patients who underwent hysterectomy for pelvic organ prolapse.

CONCLUSIONS

During a 5-years follow-up a hysterectomy alone or with native tissue prolapse surgery did not worsen pelvic floor disorders.

Relationship between hysterectomy and severity of female stress urinary incontinence

Background

Stress Urinary Incontinence (SUI) is one of the most reported health dilemmas of women suffering from lower urinary tract symptoms.

Aim

To determine the relation between hysterectomy and severity of female SUI using Valsalva Leak Point Pressure (VLPP).

Methods

This case-control study was conducted at a public urology clinic in Tehran in 2015. The study population was all female with SUI complaints who visited the clinic during 2015. We compared Valsalva leak point pressure in two groups of female SUI patients with and without hysterectomy history. The inclusion criteria were: not taking any alpha-blocker or anti-cholinergic medicines two weeks prior to the urodynamic test as well as no history of pelvic surgery or cesarean delivery in their lifetime. All qualified patients were invited to participate in the study randomly, and among them, 120 qualified patients agreed to participate by filling out the informed consent form. Data was gathered through direct interview, and double checked by patients’ medical records. All the study variables including age, BMI, delivery number, hysterectomy and UTI history were entered and analyzed by estimating ordered logistic regression and by using Stata14.1 software.

Results

The mean of VLPP was 70.17 cmH₂O in the group with hysterectomy history, and 94.55 cmH₂O in those without hysterectomy history. The difference of VLPP pressure between the two studied groups were significant (p<0.05), even after control of confounding variables. Also, the odds of severe SUI among hysterectomy group patients was 6.3 times more than no hysterectomy (OR=6.32, p<0.001).

Conclusions

Our study confirms significant relation between hysterectomy and SUI severity measured by Valsalva leak point pressure. Hysterectomy patients are more likely to suffer from more severe grades of SUI.

Effects of Hysterectomy on Pelvic Floor Disorders: A Longitudinal Study

BACKGROUND

Hysterectomy might adversely affect pelvic floor functions and result in many different symptoms, such as urinary and anal incontinence, obstructed defecation, and constipation.

OBJECTIVE

The aim of this prospective study was to evaluate the influence of hysterectomy on pelvic floor disorders.

DESIGN

This was a prospective and longitudinal study.

SETTINGS

The study was conducted at the Ankara University Department of Surgery and the Dr Zekai Tahir Burak Women's Health Research and Education Hospital between September 2008 and March 2011.

PATIENTS

The study was performed on patients who underwent hysterectomy for benign pathologies.

MAIN OUTCOME MEASURES

A questionnaire about urinary incontinence (International Continence Society scoring), anal incontinence, constipation, and obstructed defecation (Rome criteria and constipation severity score), along with an extensive obstetric history, was administered preoperatively and postoperatively annually for 4 years.

RESULTS

Patients (N = 327) who had completed each of the 4 annual postoperative follow-ups were included in this study. Compared with the preoperative observations, the occurrence of each symptom was significantly increased at each of the follow-up years (p < 0.001). Over the 4 postoperative years, the frequencies for constipation (n = 245) were 7.8%, 8.2%, 8.6%, and 5.3%; those for obstructed defecation (n = 269) were 4.5%, 5.2%, 4.1%, and 3.0%; those for anal incontinence (n = 252) were 4.8%, 6.3%, 6.0%, and 5.2%, and those for urinary incontinence (n = 99) were 12.1%, 12.1%, 11.1%, and 13.1%. In addition, patients who had no preoperative symptom (n = 70) from any of the selected symptoms showed a postoperative occurrence of at least 1 of these symptoms of 15.8%, 14.3%, 11.4%, and 8.6% for the postoperative years 1, 2, 3, and 4.

LIMITATIONS

Although the study had several limitations, no comparison with a control population was the most important one.

CONCLUSIONS

Hysterectomy for benign gynecologic pathologies had a significant negative impact on pelvic floor functions in patients who had no previous symptoms.

Predicting urinary incontinence in women in later life: A systematic review

Urinary incontinence (UI) affects 10-40% of the population and treatment costs in the UK are estimated to be £233 million per annum. A systematic review of online medical databases between July 1974 and 2016 was conducted to identify studies that had investigated risk and prediction strategies of UI in later life. Eighteen prospective longitudinal studies fulfilled the search criteria. These were analysed systematically (as per the PRISMA checklist) and bias risk through study design was minimised where possible upon data analysis. One paper proposed a predictive assessment tool called the 'continence index'. It was derived following secondary analysis of a cohort study and its predictive threshold had suboptimal sensitivity (79%) and specificity (65%) rates. Seventeen studies identified multiple strong risk factors for UI but despite a large selection of papers on the topic, no robust risk assessment tool prospectively identified patients at risk of UI in later life. Thus more research in this field is required. Clinicians should be aware particularly of modifiable UI risk factors to help reduce the clinical burden of UI in the long term.

Does previous pelvic surgery hasten the onset of clinically bothersome urodynamic stress incontinence?

OBJECTIVE

To study the impact of previous pelvic surgery on the onset of clinically bothersome urodynamic stress incontinence (USI).

STUDY DESIGN

Retrospective case-cohort study at a District General Hospital of 305 women undergoing surgery for urodynamic stress incontinence: case note and computer records review of patients undergoing USI surgery. The main outcome measures were age at index USI surgery, and duration from previous pelvic surgery to index surgery.

RESULTS

305 women were included, of whom 118 had previous pelvic surgery including abdominal hysterectomy (TAH) (n=74), vaginal hysterectomy (n=23), anterior colporrhaphy (n=27) and posterior colporrhaphy (n=25). The mean age in the previous surgery group was 62.4 years (95% CI 60.2-64.6, range 32-87) and 53.2 years in the no previous surgery group (95% CI 51.4-55, range 30-88). There were no differences in the mean BMI (28.4 vs. 27.5), or mean parity (2.4 vs. 2.5). The median duration from previous surgery to the index USI surgery was 222 months (abdominal hysterectomy), 96 months (vaginal hysterectomy), 78 months (anterior colporrhaphy), and 72 months (posterior colporrhaphy).

CONCLUSION

Previous pelvic surgery does not seem to accelerate the onset of USI, as women without previous pelvic surgery presented at a significantly earlier age (53.2 years) with clinically bothersome USI than those who had previous surgery (62.4 years). Posterior colporrhaphy had the shortest interval to index USI surgery amongst previous operations.

Balci technique for suspending vaginal vault at vaginal hysterectomy with reduced risk of vaginal vault prolapse

AIM

The aim of this study was to evaluate the efficacy of a new technique of suspending the vaginal vault at vaginal hysterectomy (VH) for total uterine prolapse.

MATERIAL AND METHODS

This prospective study included 65 patients (group 1) in whom VH was performed using the new technique and 110 patients (group 2) in whom VH was performed using the traditional method. Both groups were followed up for 4 years. The incidences of vaginal vault prolapse (VVP), total vaginal length (TVL) (location of vaginal cuff), intraoperative and postoperative complications and sexual function were compared.

RESULTS

There were no statistically significant differences between the two groups regarding age, parity, body mass index (BMI), blood loss, intraoperative and postoperative complications, and sexual function. One (1.5%) patient had VVP in group 1, whereas 12 (10.9%) patients had VVP in group 2. TVL in group 1 was 8.9 ± 1.2 cm while in group 2 it was 5.9 ± 0.8 cm. The operation times were 57 ± 5 min and 76 ± 9 min in group 1 and group 2, respectively. There was a statistically significant difference between the two groups regarding VVP (P = 0.022), TVL (P < 0.001) and operation time (P < 0.001). The two groups were also compared regarding anterior and posterior prolapse after 4 years: group 1 had less anterior and posterior prolapse (stage II or more) than group 2 (P = 0.041, P = 0.047), respectively.

CONCLUSION

In this new technique, compared to the traditional technique, there was a lower incidence of VVP, greater TVL was achieved and the duration of the operation was shorter.

Reproductive factors associated with nocturia and urinary urgency in women: a population-based study in Finland

OBJECTIVE

The objective of this study was to evaluate the association of nocturia and urinary urgency with reproductive factors, including parity, the postpartum period, the menopause, hormone replacement therapy, hysterectomy, and surgery for stress urinary incontinence (SUI).

STUDY DESIGN

In 2003-2004, questionnaires eliciting urinary symptoms, reproductive factors, SUI surgery, and potential confounders were mailed to 3000 randomly selected women aged 18-79 years, identified from the Finnish Population Register. Nocturia was defined as 2 or more voids/night. Sudden compelling desire to urinate often or always (scale of never, rarely, often, always) was regarded as urgency. Pregnant and puerperal (6 weeks after delivery) women and those reporting urinary tract infection were excluded.

RESULTS

Responses totaled 2002 (67%). Parity, postpartum (defined as six weeks to one year after delivery) and postmenopausal periods were associated with increased nocturia and SUI surgery with increased urgency (adjusted for age, comorbidity, medication, anthropometric, sociodemographic and lifestyle factors). Hormone therapy and hysterectomy were associated with neither symptom.

CONCLUSION

Reproductive factors associated with nocturia differed from those related to urgency.

Impact of hysterectomy on stress urinary incontinence: an identical twin study

OBJECTIVE

This study uses the unique properties of twin research design to evaluate whether hysterectomy impacts stress urinary incontinence (SUI).

STUDY DESIGN

As part of the Evanston Twins Sister Study, we performed bivariate and multivariate analyses on 83 identical twin pairs discordant for hysterectomy.

RESULTS

In bivariate analysis, SUI was less common in women who had prior hysterectomy (P =0.028). Multivariate analysis suggested that SUI was significantly less common after hysterectomy (odds ratio [OR], 0.55, confidence interval [CI], 0.30 to 1.00). Exclusion of twin pairs with a history of pelvic floor defect surgery eliminated the statistical relationship between hysterectomy and SUI (OR, 0.79, CI, 0.4 to 1.40).

CONCLUSION

Hysterectomy, when analyzed with all cases, was associated with reduced SUI. When concurrent pelvic floor defect surgeries were excluded from the analysis, we found no relationship between hysterectomy and the risk of SUI afterward.

Risk Factors for Pelvic Organ Prolapse Repair After Hysterectomy

OBJECTIVE

To estimate the incidence and identify the risk factors for pelvic organ prolapse repair after hysterectomy.

METHODS

We conducted a case-control study. We identified 6,214 women who underwent hysterectomy in our gynecology department from 1982 to 2002. Cases (n=114) were women who required pelvic organ prolapse surgery after hysterectomy from January 1982 through December 2005. Controls (n=236) were women randomly selected from the same cohort who did not require pelvic organ surgery during the same period. We performed a univariable and a multivariable analysis among 104 cases and 190 controls to identify the variables associated with prolapse repair after hysterectomy.

RESULTS

The incidence of pelvic organ prolapse that required surgical correction after hysterectomy was 1.3 per 1,000 women-years. The risk of prolapse repair was 4.7 times higher in women whose initial hysterectomy was indicated by prolapse and 8.0 times higher if preoperative prolapse grade 2 or more was present. Risk factors included preoperative prolapse grade 2 or more (adjusted odds ratio [OR] 12.6, 95% confidence interval [CI] 4.6-34.7), previous pelvic organ prolapse or urinary incontinence surgery (adjusted OR 7.9, 95% CI 1.3-48.2), history of vaginal delivery (adjusted OR 5.0, 95% CI 1.3-19.7), and sexual activity (adjusted OR 6.2, 95% CI 2.7-14.5). Vaginal hysterectomy was not a risk factor when preoperative prolapse was taken into account (adjusted OR 0.7, 95% CI 0.4-1.1).

CONCLUSION

Preoperative pelvic organ prolapse and other factors related to pelvic floor weakness were significantly associated with subsequent pelvic floor repair after hysterectomy. Vaginal hysterectomy was not a risk factor.

LEVEL OF EVIDENCE

II.