Prevalence of pelvic organ prolapse among US racial populations: A systematic review and meta-analysis of population-based screening studies

Clinical Trial Racial and Ethnic Disparities in Minimally Invasive Gynecologic Surgery

STUDY OBJECTIVE

To study racial and ethnic disparities in randomized controlled trials (RCTs) in minimally invasive gynecologic surgery (MIGS).

DESIGN

Cross-sectional study.

SETTING

Online review of all published MIGS RCTs in high-impact journals from 2012 to 2023.

PATIENTS

Journals included all first quartile obstetrics and gynecology journals, as well as The New England Journal of Medicine, The Lancet, The British Medical Journal, and The Journal of the American Medical Association. The National Institutes of Health's PubMed and the ClinicalTrials.gov websites were queried using the following search terms from the American Board of Obstetrics and Gynecology's certifying examination bulletin 2022 to obtain relevant trials: adenomyosis, adnexal surgery, abnormal uterine bleeding, cystectomy, endometriosis, fibroids, gynecology, hysterectomy, hysteroscopy, laparoscopy, leiomyoma, minimally invasive gynecology, myomectomy, ovarian cyst, and robotic surgery.

INTERVENTIONS

The US Census Bureau data were used to estimate the expected number of participants. We calculated the enrollment ratio (ER) of actual to expected participants for US trials with available race and ethnicity data.

MEASUREMENTS AND MAIN RESULTS

A total of 352 RCTs were identified. Of these, race and/or ethnicity data were available in 65 studies (18.5%). We analyzed the 46 studies that originated in the United States, with a total of 4645 participants. Of these RCTs, only 8 (17.4%) reported ethnicity in addition to race. When comparing published RCT data with expected proportions of participants, White participants were overrepresented (70.8% vs. 59.6%; ER, 1.66; 95% confidence interval [CI], 1.52-1.81), as well as Black or African American participants (15.4% vs. 13.7%; ER, 1.15; 95% CI, 1.03-1.29). Hispanic (6.7% vs. 19.0%; ER, 0.31; 95% CI, 0.27-0.35), Asian (1.7% vs. 6.1%; ER, 0.26; 95% CI, 0.20-0.34), Native Hawaiian or other Pacific Islander (0.1% vs. 0.3%; ER, 0.21; 95% CI, 0.06-0.74), and Indian or Alaska Native participants (0.2% vs. 1.3%; ER, 0.16; 95% CI, 0.08-0.32) were underrepresented. When comparing race/ethnicity proportions in the 20 states where the RCTs were conducted, Black or African American participants were underrepresented.

CONCLUSION

In MIGS RCTs conducted in the United States, White and Black or African American participants are overrepresented compared with other races, and ethnicity is characterized in fewer than one-fifth of trials. Efforts should be made to improve racial and ethnic recruitment equity and reporting in future MIGS RCTs.

Pelvic Floor Disorders Among Minority Women: Differences in Prevalence, Severity and Health-Related Social Needs

OBJECTIVE

To characterize prevalence and severity of pelvic floor disorders (PFDs) in various health care settings and to examine unmet health-related social needs (HRSN) among minority women.

MATERIALS AND METHODS

Minority women with PFDs were recruited from our academic urogynecology clinic, a general urology clinic at our institution's safety net hospital, and a community outreach mobile clinic. Questions from the Urinary Distress Index-6, Pelvic Organ Prolapse Distress Inventory-6, and Female Genitourinary Pain Index were used to identify patients with stress urinary incontinence, overactive bladder (OAB), and chronic pelvic pain syndrome (CPPS).

RESULTS

Sixty-one (46.6%) women identified as Hispanic, 53 (40.4%) as Black, and 17 (12.9%) as Other. Overall, self-reported PFDs included stress urinary incontinence in 45%, OAB in 74.8%, and CPPS in 24.4% of women. Hispanic women were more likely to report OAB symptoms, compared to Black women (odds ratio (OR) 3.4 [1.2-10.2], P = .03) or Other women (OR = 5.1 [1.3-20.4], P = .02). Participants held a median of 5 unmet HRSN. Minority women facing issues with family and community support, transportation, and utilities were more likely to report CPPS symptoms, compared to those without psychosocial issues (support OR: 4.8 [1.7-13.7], P = .002; transportation OR: 2.0 [1.0-8.2], P = .05; utility OR: 7.0 [1.9-28.1], P = .005).

CONCLUSION

Minority women with PFDs may have several unmet HRSNs which impact their ability to receive appropriate medical care. Our findings may assist in the development of effective strategies to improve health care outcomes for women dealing with PFDs.

Establishing a Rat Model of Pelvic Organ Prolapse with All Compartment Defects by Persistent Cervical Tension

INTRODUCTION AND HYPOTHESIS

We hypothesized that applying cervical suction and persistent tension can develop a novel and efficient rat model of pelvic organ prolapse.

METHODS

Fifteen rats underwent pilot testing to optimize the protocol. Sixteen rats were subjected to pelvic organ prolapse induction by cervical suction and constant traction, while five rats served as controls. The pelvic organ prolapse rats were assessed by a Rat Pelvic Organ Prolapse Quantification system at different time points, and their diet, urine, and stool were monitored for 21 days. The pelvic organ prolapse rats were also evaluated for urinary incontinence, urinary retention, leak point pressure, and vaginal histopathology at 21 days after operation.

RESULTS

This rat model demonstrated pelvic floor prolapse in anatomic level, as well as physiological variations (urine incontinence, urinary retention) and pathological changes (collagen fracture, decreased collagen density).

CONCLUSIONS

This is the first establishment of the pelvic organ prolapse rat model with all compartment defects, which provides a valuable tool for elucidating pelvic organ prolapse mechanisms and evaluating potential interventions.

Pelvic Floor Disorders in Black Women: Prevalence, Clinical Care, and a Strategic Agenda to Prioritize Care

Pelvic floor disorders are a group of common conditions affecting women of all racial and ethnic groups. These disorders are undertreated in all women, but this is especially magnified in Black people who have been historically marginalized in the United States. This article seeks to highlight the prevalence of pelvic floor disorders in Black women, evaluate the clinical care they receive, examine barriers they face to equitable care, and present a strategic agenda to prioritize the care of Black women with pelvic floor disorders.

Lifestyle factors, metabolic factors and socioeconomic status for pelvic organ prolapse: a Mendelian randomization study

BACKGROUND

Previous observational studies have reported that lifestyle factors, metabolic factors and socioeconomic status are associated with the development of female pelvic organ prolapse (POP); however, whether these associations are causal remains unclear. The current study aimed to assess the causal effect of lifestyle factors, metabolic factors and socioeconomic status on POP risk.

METHODS

We conducted a two-sample Mendelian randomization (MR) study based on summary-level data from the largest available genome-wide association studies (GWAS) to evaluate whether lifestyle factors, metabolic factors and socioeconomic status are causally related to POP. We used single nucleotide polymorphisms that are strongly associated with exposure at the genome-wide significance level (P < 5 × 10-8) as instrumental variables from genome-wide association studies. The method of random-effect inverse-variance weighting (IVW) was used as the primary analysis method, supplemented with the weighted median, MR-Egger and the MR pleiotropy residual sum and outlier applied to verify the MR assumptions. Two-step MR was conducted to investigate potential intermediate factors that are on the causal pathway from exposure to POP.

RESULTS

There were associations with POP for genetically predicted waist-to-hip ratio (WHR) (odds ratio (OR) 1.02, 95% confidence interval (CI) 1.01-1.03 per SD-increase, P < 0.001), WHR adjusted for body mass index (WHRadjBMI) (OR 1.017, 95% CI 1.01-1.025 per SD-increase, P < 0.001) and education attainment (OR 0.986, 95% CI 0.98-0.991 per SD-increase) in the meta-analysis. Additionally, genetically predicted coffee consumption (OR per 50% increase 0.67, 95% CI 0.47-0.96, P = 0.03), vigorous physical activity (OR 0.83, 95% CI 0.69-0.98, P = 0.043) and high-density lipoprotein cholesterol (HDL-C) (OR 0.91, 95% CI 0.84-0.98 per SD-increase, P = 0.049) were inversely associated with POP in the FinnGen Consortium. The mediation analysis showed that the indirect effects of education attainment on POP were partly mediated by WHR and WHRadjBMI, with a mediated proportion of 27% and 13% in the UK Biobank study, respectively.

CONCLUSIONS

Our study provides MR evidence of a robust causal association of WHR, WHRadjBMI and education attainment with POP.

Quantification of senescence-associated secretory phenotype proteins in the vaginal secretions of pre- and postmenopausal women with and without prolapse

Objectives

Cellular senescence has been proposed as a pathophysiologic driver in the development of pelvic organ prolapse (POP), especially during aging. In this study, we aimed to determine if markers of cell senescence can be quantified from vaginal secretions collected from pre- and postmenopausal women with and without POP.

Methods

Vaginal swabs were collected from 81 women in four groups: premenopausal with (pre-P) and without prolapse (pre-NP), and postmenopausal with (post-P) and without prolapse (post-NP). Multiplex immunoassays (MagPix) were then used to detect and quantify the presence of 10 SASP proteins in vaginal secretions.

Results

The total protein concentration of vaginal secretions differed significantly among the four groups (P = 0.003) with highest mean concentrations in pre-P [16, interquartile range (IQR) = 4.6, 38.3 μg/μL] and lowest mean concentrations in post-P (4.4, IQR = 2.6, 7 μg/μL). The normalized concentrations of several SASP markers differed significantly among groups, with the highest concentrations being seen in the post-P group, and the lowest concentrations being in the pre-NP group. Using these key markers, we then constructed receiver-operator curves to determine the relative sensitivity and specificity of these markers in predicting prolapse.

Conclusions

In this study, we found that SASP proteins can be detected and quantified in vaginal secretions. Several of these markers were differentially expressed among the four groups studied, with the highest normalized concentrations of SASP markers found among postmenopausal women with prolapse. Overall, the data support the theory that senescence is associated with prolapse during aging but that other factors may be important in younger women who develop POP before menopause.

Telomerase-mediated immortalization of human vaginal wall fibroblasts derived from patients with pelvic organ prolapse

BACKGROUND

Extracellular matrix (ECM) remodeling is the most important pathomechanism of pelvic organ prolapse (POP). Fibroblasts are the key to ECM regulation. The passaging capacity of human vaginal wall fibroblasts (hVWFs) is limited in vitro . Here, we aimed to immortalize hVWFs through the introduction of human telomerase reverse transcriptase (hTERT).

METHODS

Primary cells were derived from the vaginal wall tissue of patients with POP. Cellular senescence was detected via senescence-associated β-galactosidase staining. We employed a lentiviral transfection vector to stably express hTERT in hVWFs at passage 3, generating immortalized hVWFs (i-hVWFs). We then assessed cellular proliferation via the CCK-8 and EdU assays as well as cellular migration via wound healing assays. G-banded chromosome karyotypic analysis was performed to evaluate chromosomal karyotype stability. Finally, cellular tumorigenesis capacity was assessed in nude mice. A two-tailed Student's t test was used to compare differences between the two groups.

RESULTS

Our results showed that senescence of primary hVWFs significantly increased from passage seven. From passage 11, hVWFs showed a significantly higher senescence percentage than i-hVWFs. During the continuous passage, i-hVWFs presented stability in proliferation, migration capacity, expression of ECM regulation-related genes, and chromosome karyotype. In vivo tumorigenesis was absent in i-hVWFs.

CONCLUSIONS

The senescence of hVWFs significantly increased from the seventh passage, and we successfully used hTERT to immortalize hVWFs derived from patients with POP. Studies on POP that require a long-lived hVWF line will benefit from our technique.

Differences in Anorectal Manometry Values Among Women With Fecal Incontinence in a Racially, Ethnically, and Socioeconomically Diverse Population

IMPORTANCE

Anorectal manometry (ARM) is a valuable diagnostic and therapeutic tool that can both aid in identifying mechanisms contributing to fecal incontinence (FI) and inform management strategies. Consensus on standard reference range values has not been established, and women of varying racial and ethnic backgrounds are not well-represented in the current literature.

OBJECTIVE

We aimed to compare ARM values between women of different racial and ethnic groups with FI.

STUDY DESIGN

We conducted a retrospective cross-sectional study of women with FI who underwent ARM at a tertiary health system in an urban underserved community between 2016 and 2021. Demographic information and ARM values were collected from the medical record. Socioeconomic status (SES) was represented by the percent of the population living below the poverty line according to zip code using U.S. census data. Anorectal manometry values were compared between racial and ethnic groups, and multivariable logistic regression was conducted to control for patient characteristics.

RESULTS

Fifty-eight women were included in the analysis: 33% Hispanic, 22% Black, and 45% White. Hispanic and Black women had higher body mass index and higher rates of diabetes and loose stools and were of significantly lower SES compared with White women. Black and Hispanic women had significantly lower thresholds for volume at first sensation and higher mean anal squeeze pressure. Differences were maintained after controlling for body mass index, diabetes, SES, and diarrhea (P = 0.03 and P = 0.01, respectively). Other ARM values were not significantly different between groups.

CONCLUSIONS

Racial and ethnic differences in ARM values among women with FI exist. Further studies are needed to determine whether these differences have an impact on symptom severity, treatment selection and outcomes, and patient satisfaction.

Does the Contractile Capability of Pelvic Floor Muscles Improve with Knowledge Acquisition and Verbal Instructions in Healthy Women? A Systematic Review

Seventy percent of women with pelvic floor dysfunctions (PFDs) are estimated to present deficient consciousness of their pelvic floor muscles (PFMs) and poor ability to contract them. Improving the proprioception of PFMs, defined as the capacity to know the status and position of each body part, and adequately contracting them could be a protective factor to prevent the appearance of PFDs in the general female population. This study aimed to identify the effectiveness of educational interventions and verbal instructions on how to contract and exercise the PFMs to improve the proprioception of the PFMs in women. A systematic search of studies published in the last 20 years until March 2022 was conducted in the PubMed, Cochrane Library, Web of Science, Scopus, PEDro, Lilacs, and Dialnet databases. A meta-analysis could not be performed due to the heterogeneity in the types of studies and included populations. This review followed the PRISMA guidelines for the design, search, and reporting of studies. The methodological quality was analysed via the PEDro and the Newcastle–Ottawa scales in the case of randomised clinical trials and non-randomised studies, respectively, while the quality of evidence was determined using the SIGN grading system for evidence-based guidelines. Descriptive and experimental studies published in English, Spanish, or Portuguese that evaluated the contractile capability of the PFMs in healthy women or women without a previous diagnosis of PFD were included. Seven articles that included a total of 2507 women were found, three of which were clinical trials with PEDro scores between 5 and 9 points out of 10 and four of which were non-randomised studies with NOS scores between 6 and 8 points out of 10. The outcomes were measured through vaginal palpation, visual observation, questionnaires for PFD symptoms, and self-perception reports. This review discriminated between two types of intervention, educational programmes and verbal instructions, and evaluated the changes observed in PFM strength and knowledgeability and the symptoms of PFDs. The findings showed that educational interventions and verbal instructions improve the proprioception of PFMs in women of all ages that are healthy or without a previous diagnosis of PFDs as well as their knowledge about the pelvic floor, healthy lifestyle habits, and symptoms that are potentially indicative of PFDs. Further high-quality randomised clinical trials are warranted to draw definitive conclusions about the effectiveness of educational interventions to improve the proprioception of the PFMs in women considered healthy or with mild symptoms that may be indicative of PFDs.