Evaluation and Management of Pelvic Organ Prolapse

Trends and focal points in pelvic floor reconstruction for pelvic organ prolapse: A bibliometric analysis

OBJECTIVE

This study aims to investigate the current research trends and focal points in the field of pelvic floor reconstruction for the management of pelvic organ prolapse (POP).

METHODS

To achieve this objective, a bibliometric analysis was conducted on relevant literature using the Citespace database. The analysis led to the creation of a knowledge map, offering a comprehensive overview of scientific advancements in this research area.

RESULTS

The study included a total of 607 publications, revealing a consistent increase in articles addressing pelvic floor reconstruction for POP treatment. Most articles originated from the United States (317 articles), followed by Chinese scholars (40 articles). However, it is important to note that the overall number of articles remains relatively low. The organization with the highest publication frequency was the Cleveland Clinic in Ohio, where Matthew D. Barber leads the academic group. Barber himself has the highest number of published articles (18 articles), followed by Zhu Lan, a Chinese scholar (10 articles). Key topics with high frequency and mediated centrality include stress urinary incontinence, quality of life, impact, and age. The journal with the largest number of papers from both domestic and international researchers is INT UROGYNECOL J. The study's hotspots mainly focus on the impact of pelvic floor reconstruction on the treatment and quality of life of POP patients. The United States leads in this field, but there is a lack of cooperation between countries, institutions, and authors. Moving forward, cross-institutional, cross-national, and cross-disciplinary exchanges and cooperation should be strengthened to further advance the field of pelvic floor reconstructive surgery for POP research.

Specialty-Specific Trends in Surgery for Apical Pelvic Organ Prolapse Post Vaginal Mesh

IMPORTANCE

Since transvaginal mesh (VM) kits for apical pelvic organ prolapse (APOP) were labeled "high-risk" in 2016 and subsequently banned in 2019 by the U.S. Food and Drug Administration, the most common remaining surgical options include abdominal mesh-augmented sacrocolpopexy (AS) and transvaginal native tissue suspension (VN).

OBJECTIVE

The objective of this study was to determine temporal trends in APOP procedures for urologists and gynecologists.

STUDY DESIGN

Between 2011 and 2020, the American College of Surgeons National Surgical Quality Improvement Program database was queried for AS, VM, and VN.

RESULTS

There were 26,477 cases of APOP repair (32% AS, 6% VM, 62% VN) included, 9% by urologists. Urologists operated on older (65 vs 61 years) patients with more medical comorbidities. Urologists performed significantly higher proportion of AS (65% vs 29%) and VM (8% vs 6%) relative to VN (27% vs 65%) than gynecologists ( P < 0.0001). Transvaginal mesh utilization has decreased over time for both specialties ( P < 0.05); nonsignificant trends toward increasing AS ( P = 0.1646) in urologists and VN ( P = 0.0913) in gynecologists concurrently occurred. Significant independent predictors of the operating surgeon being a urologist were surgery being performed in the latter half of the cohort (2016-2020; odds ratio [OR], 1.22), non-White patient race (OR < 1 for all), a concomitant sling being placed (OR = 0.89), the surgery being VM (OR = 2.95) or AS (OR = 4.36), the patient being older (OR > 1 for each age range), and having a higher frailty index score (OR = 1.16).

CONCLUSIONS

Significant differences in APOP repair choices exist between specialties. Urologists operate on older, more medically complex patients while demonstrating a strong preference for mesh-augmented compared with transvaginal native tissue repairs.

A 5-year evaluation of quality of life, pelvic discomfort, and sexual function following posterior pericervical repair

The aim of this study was to evaluate the quality of life, pelvic discomfort, and sexual function of patients who underwent posterior pericervical repair or level I to III surgical procedures for pelvic organ prolapse (POP) after 5 years of follow-up. This retrospective cohort study enrolled 107 women with POP who were referred to the Imam Khomeini Hospital Complex, an academic center affiliated with the Tehran University of Medical Sciences, Tehran, Iran, from 2014 to 2021. The patients underwent transvaginal surgery using native tissue, in which the rectovaginal fascia was attached to the pericervical ring. The Pelvic Floor Distress Inventory-20 (PFDI-20) and Lower Urinary Tract Symptoms Module (ICIQ-FLUTSsex) questionnaires were completed by each patient before and 5 years after surgery. Of the 107 patients, only 78 completed the 5-year follow-up. The mean PFDI-20 scores before, 12 months, and 5 years after surgery were 141.87 ± 34.48, 100.87 ± 26.48, and 37.49 ± 56.39, respectively, indicating a significant improvement in the patients' symptoms after surgery (P < 0.001). The total mean score of ICIQ-FLUTSsex was 3.67 ± 3.63 (range, 0-10). In total, 22 (28.2%) women had an ICIQ-FLUTSsex score of 0, indicating no problems. The attachment of the rectovaginal fascia to the pericervical rings can be an effective surgical technique for correcting posterior vaginal wall prolapses, without significant morbidity. The PFDI-20 score improved significantly from before surgery to 12 months and 5 years after surgery.

Effect of Vaginal Microecological Alterations on Female Pelvic Organ Prolapse

INTRODUCTION AND HYPOTHESIS

The objective was to investigate the correlation between endogenous vaginal microecological alterations and female pelvic organ prolapse (POP).

METHODS

Patients who underwent vaginal hysterectomy were retrospectively analyzed as the POP group (n = 30) and the non-POP group (n = 30). The vaginal microbial metabolites and enzyme levels were tested using the dry chemoenzymatic method. The mRNA and protein expression were tested using real-time quantitative PCR and immunohistochemistry. SPSS version 25.0 and GraphPad Prism 8.0 were performed for statistical analysis.

RESULTS

Compared with the non-POP group, the vaginal pH, H2O2 positivity and leukocyte esterase positivity were higher in patients with POP (all p < 0.05). Further analysis showed that patients with pelvic organ prolapse quantification (POP-Q) stage IV had higher rates of vaginal pH, H2O2 positivity and leukocyte esterase positivity than those with POP-Q stage III. Additionally, the mRNA expression of decorin (DCN), transforming growth factor beta 1 (TGF-β1), and matrix metalloproteinase-3 (MMP-3) in uterosacral ligament tissues were higher, whereas collagen I and III were lower. Similarly, the positive expression of MMP-3 in uterosacral ligament tissue was significantly upregulated in the POP group compared with the non-POP group (p = 0.035), whereas collagen I (p = 0.004) and collagen III (p = 0.019) in uterosacral ligament tissue were significantly downregulated in the POP group. Correlation analysis revealed that there was a significant correlation between vaginal microecology and collagen metabolism. In addition, MMP-3 correlated negatively with collagen I and collagen III (p = 0.002, r = -0.533; p = 0.002, r = -0.534 respectively), whereas collagen I correlated positively with collagen III (p = 0.001, r = 0.578).

CONCLUSIONS

Vaginal microecological dysbiosis affects the occurrence of female POP, which could be considered a novel therapeutic option.

Quality of Life after Treatment for Pelvic Organ Prolapse in Real-World Study: Recommendations, Vaginal Pessary, and Surgery

Background and Objectives: Pelvic organ prolapse (POP) is a common condition in women, with its prevalence increasing with age, and can significantly impact the quality of life (QOL) of many individuals. The objective of this study was to assess the overall improvement, quality of life, and continuation of primary treatment for POP over a 24-month period in a real-world setting. Materials and Methods: This is a prospective, observational, follow-up study of women with symptomatic POP who, as a primary treatment, opted for recommendations (lifestyle changes and pelvic floor muscle training), pessary therapy, or surgery. The primary outcome measure was a subjective improvement at the 24-month follow-up, measured with the Patient Global Impression of Improvement (PGI-I) scale. Secondary outcome measures were the continuation rate of the primary treatment method, reason for discontinuation, and the quality of life evaluated with the P-QoL questionnaire. Results: We included 137 women, with 45 women (32.8%) in the recommendations group, 39 (28.5%) in the pessary group, and 53 women (38.7%) in the surgery group. After 24 months, surgery, in comparison with pessary treatment and recommendations, resulted in significantly more women reporting a subjective improvement: 89.6%, 66.7%, and 22.9% (p < 0.001), respectively. Overall, 52% of women from the recommendations group and 36.4% from the pessary group switched to another treatment or discontinued the primary treatment within 24 months. However, women who continued the primary treatment, pessary use, and surgery showed similar subjective improvements (90.5% and 89.6%, respectively) and quality-of-life improvement. Conclusions: The chance of significant improvement was higher following surgery. However, after 24 months, both vaginal pessaries and surgery showed an important quality-of life improvement and can be proposed as primary treatment methods for pelvic organ prolapse.

Increased extracellular matrix stiffness regulates myofibroblast transformation through induction of autophagy-mediated Kindlin-2 cytoplasmic translocation

The extracellular matrix (ECM) mechanical properties regulate biological processes, such as fibroblast-myofibroblast transformation (FMT), which is a crucial component in pelvic organ prolapse (POP) development. The 'Kindlin-2' protein, expressed by fibroblasts, plays an important role in the development of the mesoderm, which is responsible for connective tissue formation; however, the role of Kindlin-2 in FMT remains to be explored. In this study, we aimed to explore the role of Kindlin-2 in FMT as it relates to POP. We found that ECM stiffness induces autophagy to translocate Kindlin-2 to the cytoplasm of L929 cells, where it interacts with and degrades MOB1, thereby facilitating Yes-associated protein (YAP) entry into the nucleus and influencing FMT progression. Stiffness-induced autophagy was inhibited when using an autophagy inhibitor, which blocked the translocation of Kindlin-2 to the cytoplasm and partially reversed high-stiffness-induced FMT. In patients with POP, we observed an increase in cytoplasmic Kindlin-2 and nuclear YAP levels. Similar changes in vaginal wall-associated proteins were observed in a mouse model of acute vaginal injury. In conclusion, Kindlin-2 is a key gene affecting ECM stiffness, which regulates FMT by inducing autophagy and may influence the development of POP.

Vaginal Hysterectomy at the Time of Total Colpocleisis: A Single-Center Experience

OBJECTIVE

This study aims to evaluate the five-year experience of a single center regarding the total colpocleisis procedure.

METHODS

This is a retrospective review of 24 women who underwent total colpocleisis at the study center between January 2017 and January 2023. Every participant was informed about this study, and written consent was obtained from each participant who then took Pelvic Floor Distress Inventory-20 (PFDI-20), Body Appreciation Scale-2 (BAS-2) and Decision Regret Scale (DRS) questionnaires consecutively.

RESULTS

Eight patients (33.3%) underwent total colpocleisis, whereas 16 patients (66.7%) had concomitant colpocleisis and vaginal hysterectomy. The number of total colpocleisis cases did not change significantly with respect to the past years (p=0.117). The patients who underwent total colpocleisis and the patients who had concurrent colpocleisis and hysterectomy were statistically similar with respect to age, gravidity, chronic disease, blood group, American Society of Anesthesiologists classification, anesthesia type, surgery timing and preoperative and postoperative hemoglobin values (p>0.05 for all). Operative time was significantly shorter in patients who had colpocleisis alone (p=0.001). Both patient groups were also statistically similar in aspects of blood loss, transfusion need, hospital stay, postoperative complications and follow-up time as well as PFDI-20, BAS-2 and DRS scores (p>0.05 for all). Endometrial atrophy (56.3%), endometrial hyperplasia (18.8%) and adenomyosis (12.5%) were the most common histopathological findings detected in vaginal hysterectomy specimens.

CONCLUSION

The combination of vaginal hysterectomy and total colpocleisis appears as a safe and efficient approach which does not contribute to the surgery-related morbidity despite the significantly longer operative time.

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.

A case of pyelonephritis due to ureteral obstruction caused by complete uterine prolapse

We present the case of a patient with pyelonephritis secondary to urinary tract obstruction caused by uterine prolapse. An 80-year-old woman with uterine prolapse (pelvic organ prolapse stage 4) was treated with a pessary at an outside hospital due to her high perioperative risk. However, the pessary prolapsed. The patient developed pyelonephritis with hydronephrosis. A pessary was inserted to resolve the blockage of the urinary tract, antibiotic treatment was initiated, and the patient's condition improved. A total vaginal hysterectomy was ultimately performed. Challenges remain in the treatment of pelvic organ prolapse stage 4 for which a pessary cannot be used.

FZD3 regulates the viability, apoptosis, and extracellular matrix degradation of vaginal wall fibroblasts in pelvic organ prolapse via the Wnt signaling pathway

The occurrence of pelvic organ prolapse (POP) seriously affects women's quality of life. However, the pathogenesis of POP remains unclear. We aimed to clarify the role of Frizzled class receptor 3 (FZD3) in POP. FZD3 expression in the vaginal wall tissues was detected using immunohistochemistry, real-time polymerase chain reaction, and western blot analysis. Then, vaginal wall fibroblasts (VWFs) were isolated from patients with POP and non-POP, and were identified. Cell viability and apoptosis were evaluated using Cell Counting Kit-8 and flow cytometry, respectively. Extracellular matrix (ECM) degradation was assessed by western blot analysis. The results illustrated that FZD3 was downregulated in POP. VWFs from POP had lower cell viability, ECM degradation, and higher apoptosis. Knockdown of FZD3 inhibited cell viability, ECM degradation, and promoted apoptosis of VWFs, whereas overexpression of FZD3 had opposite results. Moreover, IWP-4 (Wingless-type [Wnt] pathway inhibitor) reversed the role of FZD3 overexpression on biological behaviors. Taken together, FZD3 facilitates VWFs viability, ECM degradation, and inhibits apoptosis via the Wnt pathway in POP. The findings provide a potential target for the treatment of POP.

The causal effect of reproductive factors on pelvic floor dysfunction: a Mendelian randomization study

BACKGROUND

Pelvic floor dysfunction (PFD) is an extremely widespread urogynecologic disorder, the prevalence of which increases with aging. PFD has severely affected women's quality of life and has been called a social cancer. While previous studies have identified risk factors such as vaginal delivery and obesity for PFD, other reproductive factors, including age at menarche (AAMA), have been largely overlooked. Therefore, we used a Mendelian randomization (MR) study for the first time to investigate the potential causal relationship between reproductive factors and PFD.

METHODS

We obtained summary statistics from genome-wide association studies (GWAS) for female genital prolapse (FGP), stress urinary incontinence (SUI), and five reproductive factors. Two-sample Mendelian randomization analysis (TSMR) was performed to explore the causal associations between these factors. The causal effects of reproductive factors on FGP and SUI were primarily estimated using the standard inverse variance weighting (IVW) method, with additional complementary and sensitivity analyses conducted using multiple approaches. A multivariate Mendelian randomization (MVMR) study was also conducted to adjust for pleiotropic effects and possible sources of selection bias and to identify independent exposure factors.

RESULTS

Our findings revealed that advanced age at first sexual intercourse (AFS) and age at first birth (AFB) exhibited negative causal effects on both FGP and SUI. AAMA showed negative causal effects solely on FGP, while age at last live birth (ALB) and age at menopause (AAMO) did not demonstrate any causal effect on either FGP or SUI. And the MVMR results showed that AFB and AFS had independent negative causal effects on FGP and SUI, respectively.

CONCLUSIONS

This study, for the first time, investigates the causal relationship between reproductive factors and PFD. The results suggested a causal relationship between some reproductive factors, such as AFB and AFS, and PFD, but there were significant differences between FGPand SUI. Therefore, future studies should explore the underlying mechanisms and develop preventive measures for reproductive factors to reduce the disease burden of PFD.

The alteration of apoptosis-related genes in female pelvic supportive tissues with regard to menopausal status

PURPOSE

We aimed to compare the expression levels of anti-apoptotic and proapoptotic genes in the parametrium, sacrouterine and round ligaments with respect to menopausal status in women presenting without any indication of pelvic organ prolapse (POP). We hypothesized that apoptosis related gene expressions in female pelvic tissues may be altered during menopause.

METHODS

The study groups consisted of pre-menopausal (n = 10) and menopausal (n = 10) females who did not have POP symptoms. Three different types of tissue samples (Parametrium, Round Ligament and Sacrouterine Ligament) were obtained and RNA was isolated from these tissues. After purifying and quantifying RNA samples, qPCR was used to determine the expression levels of anti-apoptotic and pro-apoptotic genes.

RESULTS

BCL-2 gene expression levels were significantly lower in all the tissues of menopausal patients compared to those of premenopausal patients. In comparison to premenopausal patients, the sacrouterine ligament tissue BAD expression level was significantly high (p = 0.035), and the BCL-2/BAD ratio was significantly lower in menopausal patients (p = 0.006).

CONCLUSION

Apoptosis-related protein levels change during menopause; pro-apoptotic gene expressions decrease and anti-apoptotic gene expressions increase. The significant alteration of BCL-2 and BAD expression in sacrouterine ligament with respect to menopausal status was observed and this suggested that when compared to other pelvic tissues, the sacrouterine ligament, which plays a crucial role for genital organs in restoring normal pelvic anatomy and providing support, could be affected more by menopause.

Meta-analysis of the efficacy of laparoscopic uterosacral ligament suspension in patients with pelvic organ prolapse

OBJECTIVE

This study aimed to evaluate the efficacy of laparoscopic uterosacral ligament suspension (LUSLS) for pelvic organ prolapse (POP) using a meta-analysis method.

METHODS

All articles about LUSLS published in English from Jan. 2010 to Jan. 2020 were retrieved using a computer from search engines, including PubMed, EMbase, Cochrane Library, CNKI, Wanfang, VIP, and Chinese Medical Journals. Meta-analysis was performed by two evaluators using RevMan 5.3 software according to the inclusion criteria.

RESULTS

A total of five studies were finally included, with 361 LUSLS cases and 361 control cases. LUSLS group showed a shorter operation duration (SMD-1.96; 95% CI = -3.90- -0.03; P = 0.05), more POP-quantification system (Q) (I) (SMD1.64; 95% CI = 1.05-2.56; P = 0.03), than the control group, with significant differences. There was no difference in the complication incidence, hospital stay, POP-Q>=II between the 2 groups (P > 0.05).

CONCLUSION

LUSLS was a safe and effective treatment for POP. Patients had higher postoperative satisfaction, shorter operation duration and satisfactory outcome. More high-quality randomized controlled trials are required in the future to make the results of the meta-analysis more accurate.

Analysis of the anatomical and biomechanical characteristics of the pelvic floor in cystocele

INTRODUCTION

Stress urinary incontinence (SUI) occurs due to disruption of the pelvic floor anatomy; however, the complexity of the pelvic floor support structures and individual patient differences make it difficult to identify the weak points in the pelvic floor support that cause SUI to occur, develop, and recur. This study aimed to analyze the pelvic floor anatomy, structural features, and biomechanics of cystoceles to develop more effective treatment plans with individualized and precise healthcare.

MATERIAL AND METHODS

In this observational case-controlled study (clinical trial identifier BOJI201855L), 102 women with normal pelvic floor function and 273 patients diagnosed with cystocele degrees I-III were identified at Shanghai General Hospital from October 2016 to December 2019. We combined ultrasound and vaginal tactile imaging (VTI) to assess the anatomy and biomechanical functions of the anterior and posterior vaginal walls. Both examinations included relaxation and muscle tension tests.

RESULTS

Of the 42 VTI parameters, 13 were associated with the degree of cystocele, six with an increase in the urethral rotation angle (pointing to the mobility of the urethra), and six with a decrease in the retrovesical angle (pointing to hypsokinesis and decrease in bladder position). According to these data, the strength of tissues, especially the muscles in both the anterior and posterior compartments, contributes to the stability of the pelvic floor structure. The strength of the levator ani muscle (LAM) is important for the degree of cystocele, mobility of the urethra, hypsokinesis, and decrease in bladder position.

CONCLUSIONS

In general, the biomechanical status of the pelvic floor in patients with cystocele is complex and involves various muscles, ligaments, tendons, and fascia. Of these, repair and exercise of the LAM have not received much attention in the treatment of patients with cystoceles, which may be an important risk factor for the high recurrence rate.

The incidence and risk factors of occult malignancy in patients receiving vaginal hysterectomy for pelvic organ prolapse

INTRODUCTION AND HYPOTHESIS

The aim of this study was to assess the incidence and risk factors for premalignant and malignant pathology in patients receiving vaginal hysterectomy (VH) and pelvic floor repair (PFR) for pelvic organ prolapse (POP).

METHODS

We performed a retrospective cohort study of pathological results after VH and PFR of 569 women at our institution from January 2011 through December 2020. Age, body mass index (BMI), POP-Q stage, and preoperative ultrasound results were evaluated as risk factors for occult malignancy.

RESULTS

Six of the 569 patients (1.1%) had unanticipated premalignant uterine pathology and 2 (0.4%) had unanticipated malignant uterine pathology (endometrial cancer). There was no significant difference in the incidence of premalignant or malignant uterine pathology according to age, BMI, and POP-Q stage. However, if endometrial pathology is confirmed on preoperative ultrasonography, the probability of confirming malignant pathology increases (OR 4.63; 95% CI 1.84-51.4; p=0.016).

CONCLUSION

The incidence of occult malignancy during VH for POP was significantly lower than that found in hysterectomy owing to benign disease. In the case of POP patients, for whom uterine-conserving surgery is not absolutely contraindicated, it can be performed. However, if endometrial pathology is confirmed by preoperative ultrasonography, uterine-conserving surgery is not recommended.

Identification of potential molecular mechanisms and therapeutic targets for recurrent pelvic organ prolapse

Background

The pathogenesis of recurrent pelvic organ prolapse (POP) is currently unclear. Therefore, developing targeted preventive measures is difficult. This study identified potential key pathways, crucial genes, comorbidities, and therapeutic targets associated with the occurrence and development of recurrent POP.

Methods

The original microarray data GSE28660, GSE53868, and GSE12852 were downloaded from the GEO database. Identification and validation of differentially expressed genes (DEGs) and hub genes associated with recurrent POP were performed using R software and cytoHubba of Cytoscape. Protein-protein interaction (PPI) networks were constructed using the STRING tool and visualized using Cytoscape. Gene ontology (GO) and Kyoto Encyclopedia of Gene and Genome (KEGG) enrichment analyses were effectively performed using DAVID platforms. In addition, the NetworkAnalyst platform was used to explore and visualize the miRNA-hub gene network, TF-hub gene network, hub gene-disease network, and hub gene-drug/chemical network.

Results

A total of 110 DEGs and 6 hub genes (ADIPOQ, IL6, PPARG, CEBPA, LPL, and LIPE) were identified in this study. These genes were primarily enriched in the PPAR, AMPK, and adipocytokine, non-alcoholic fatty liver disease, and signaling pathways related to glycerol metabolism. Moreover, 96 miRNAs and 97 TFs were identified to as being associated with recurrent POP. These genes were closely linked to adipocyte metabolism and distribution, energy metabolism, and the longevity regulatory pathway. In addition, 192 diseases or chronic complications were potentially related to the recurrence of POP, including diabetes, hypertension, obesity, inflammatory diseases, and chronic obstructive pulmonary disease. Furthermore, 954 drugs or compounds were shown to have therapeutic potential for recurrent POP, and the most critical target drugs were dexamethasone, bisphenol A, efavirenz, 1-methyl-3-isobutylxanthine, and estradiol.

Conclusions

The results of this study revealed that ADIPOQ, IL6, PPARG, CEBPA, LPL, and LIPE as potential hub genes associated with recurrent POP, and these hub genes may aid in the understanding of the mechanism underlying POP recurrence and the development of potential molecular drugs.

The prevalence of pelvic organ prolapse and associated factors in Ethiopia: a systematic review and meta-analysis

Background

Pelvic organ prolapse (POP) affects millions of women globally, with resource-limited countries, such as Ethiopia, carrying the highest burden. Previously, the prevalence of POP was estimated using seven studies. However, this study lacks generalization because of the limited number of studies and low geographical representation. In total, 12 additional primary studies were conducted after this review, and their reported prevalence was significantly variable across the studies. In addition, different new factors were reported in the primary studies. Therefore, this study aimed to update the pooled prevalence of POP and its associated factors in Ethiopia.

Methods

This study was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Articles that were published between 2000 and 2023 were searched using the African Journal of Online, ScienceDirect, DOAJ, PubMed, and Google Scholar. The quality of the studies was evaluated using the modified Newcastle-Ottawa quality assessment tool. The data were extracted using Microsoft Excel and analyzed by Stata version 11. A random effect model was used to investigate the pooled prevalence of POP and its associated factors. The I2 test and Egger's regression test were used to detect the presence of heterogeneity and publication bias across studies, respectively.

Result

A total of 21 studies met the inclusion criteria and represented the data of 14,575 women. The pooled prevalence of POP was found to be 22.70%. History of home delivery (pooled odds ratio (OR) =2.93, 95% CI =1.46, 5.91), prolonged labor (OR = 4.63, 95% CI = 2.56, 8.38), history of perineal tear (OR = 4.83, 95% CI = 2.31, 10.11), instrumental delivery (OR =3.70, 95% CI =2.01, 6.81), grand multipara (OR = 5.42, 95% CI = 4.06, 7.23), family history of POP (OR = 3.30, 95% CI = 2.07, 5.25), and carrying heavy objects (OR = 3.23, 95% CI = 2.22, 4.70) were significantly associated with POP.

Conclusion

The pooled prevalence of POP was high in Ethiopia. The Ministry of Health and clinicians should emphasize counseling on modifiable risk factors and develop further prevention strategies.

Creation of the biomechanical finite element model of female pelvic floor supporting structure based on thin-sectional high-resolution anatomical images

PURPOSE

The main purpose of this study is to obtain a finite element biomechanical model that accurately mimics pelvic organ prolapse in women, to study pelvic floor supporting structures' biomechanical properties and function. We used thin-sectional high-resolution anatomical images (Chinese Visible Human, CVH) to reconstruct a detailed three-dimensional (3D) biomechanical finite element model of the female pelvic floor supporting structure including cardinal ligament, uterosacral ligament, levator ani muscle (LAM) and perianal body. The Valsalva maneuver was simulated by loading the uterus and bladder with a pressure increasing from 0 to 10 kPa. The stress, strain and displacement of supporting structures were calculated. The cardinal ligament, the uterosacral ligament and the LAM were stressed greatly when the uterus moved downward, and the maximum stress could reach 0.267 MPa, 1.51 MPa and 0.065 MPa respectively, and the maximum strain could reach 0.154, 0.16, 0.265, and the maximum displacement could reach 1.786 cm, 1.946 cm and 0.567 cm. Displacement of the perineal body also occurred, and its stress, strain and displacement were 0.092 MPa, 0.381, 0.73 cm. The stress, strain and displacement of the supporting structure around the urethra were 0.339 MPa, 0.169, 1.491 cm. Our model based on CVH has more detailed anatomical structures, which is superior to that based on MRI. Our simulation results were consistent with previous findings, which verified the unbalance of abdominal pressure and pelvic floor supporting structures will lead to POP, which provide a theoretical basis for pelvic floor anatomy and function as well as obstetrical surgery.

Knowledge mapping and visualization analysis of pelvic organ prolapse repair with mesh from 2001 to 2021

Aims: In recent decades, extensive attention has been paid to the application of mesh to repair pelvic floor defects. However, a large body of related literature has not been system summarized. The purpose of this study is to summarize and visualize the literature on pelvic organ prolapse (POP) repair with mesh using bibliometrics. Methods: Medical literature regarding POP repair with mesh were searched and obtained in the Web of Science™ Core (WoSCC) database from 2001 to 2021. Microsoft Excel 2020, CiteSpace and VOSviewer were used to conduct the bibliometric and knowledge-map analysis. Results: In the past 20 years, a total of 2,550 articles and reviews have been published in 35 journals, and the published and cited results show a growing trend. Cosson M and International Urogynecology Journal were the authors and journals with the highest output, respectively. The United States, France and the United Kingdom are among the top three countries/organizations in relevant publications in worldwide. 584 key words in the literature are divided into 8 clusters, which are mainly related to prolapse type, risk factors, surgical methods, imaging, quality of life and bioengineering. Using clinical research and tissue engineering technology to reduce mesh complications is the current hot spot in this field. Conclusion: Reasonable application of mesh and avoiding mesh complications are still the most concerned topics in POP research. Although clinical research, surgical improvement, biological mesh and bioengineering technology have shown promising results, it is still urgent to carry out clinical transformation application research.

Quality of Life Following Pelvic Organ Prolapse Treatments in Women: A Systematic Review and Meta-Analysis

Introduction: Quality of life (QoL) improvement is one of the main outcomes in the management of pelvic organ prolapse as a chronic illness in women. This systematic review aimed to investigate the impact of surgical or pessary treatment for pelvic organ prolapse (POP) on quality of life. Methods: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) was applied. Electronic databases, including PubMed, Scopus, and Web of Science, were searched for original articles that evaluated the QoL before and after surgical interventions or pessary in pelvic organ prolapse from 1 January 2012 until 30 June 2022 with a combination of proper keywords. Included studies were categorized based on interventions, and they were tabulated to summarize the results. Results: Overall, 587 citations were retrieved. Of these, 76 articles were found eligible for final review. Overall, three categories of intervention were identified: vaginal surgeries (47 studies), abdominal surgeries (18 studies), and pessary intervention (11 studies). Almost all interventions were associated with improved quality of life. The results of the meta-analysis showed a significant association between the employment of surgical approach techniques (including vaginal and abdominal surgeries) and the quality of life (Pelvic Floor Distress Inventory (PFDI) (MD: −48.08, 95% CI: −62.34 to −33.77, p-value < 0.01), Pelvic Floor Impact Questionnaire (PFIQ) (MD: −33.41, 95% CI: −43.48 to −23.34, p < 0.01)) and sexual activity of patients with pelvic organ prolapse (Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ) (MD: 4.84, 95% CI: 1.75 to 7.92, p < 0.01)). Furthermore, narrative synthesis for studies investigating the effect of the pessary approach showed a positive association between the use of this instrument and improvement in the quality of life and sexual activity. Conclusions: The results of our study revealed a significant improvement in the women’s quality of life following abdominal and vaginal reconstructive surgery. The use of pessary was also associated with increased patient quality of life.

Biomaterials science and engineering to address unmet needs in women's health

Medical conditions that primarily or disproportionately affect women have historically been poorly studied. In contrast to the musculoskeletal and cardiovascular systems, there is no lengthy record of biomaterials research addressing women's health needs. In this article, the historical reasons for this discrepancy are examined. The anatomy of both the nonpregnant and pregnant reproductive tissues is reviewed, including the ovaries, uterus, and (fetal) placenta. Examples of biomaterials-related women's health research are described, including tissue engineering, organoids, and microphysiological systems. The future of the field is considered with dual focuses. First, there is a significant need for novel approaches to advance women's health through materials and biomaterials, particularly in complex biomimetic hydrogels. Second, there is an exciting opportunity to enlarge the community of biomaterials scientists and engineers working in women's health to encourage more contributions to its rapidly emerging product development pipeline.

Global burden and trends of pelvic organ prolapse associated with aging women: An observational trend study from 1990 to 2019

Purpose

Worldwide, about 40% of women will experience pelvic organ prolapse (POP), and this proportion is expected to increase with the aging of the population. We investigated the global, regional and national influenza burden in the past 30 years through the age and sociodemographic index (SDI).

Patients and methods

Data were extracted from the Global Burden of Disease (GBD) 2019 database for 195 countries and territories between 1990 and 2019. Estimated annual percentage changes (EAPCs) were used to explore the age-standardized incidence rate (ASIR) and age-standardized disability adjusted life years (AS-DALYs) trends, and the corresponding 95% uncertainty intervals (UI). In addition, the time cut-off points of 1990 and 2019 were used to separately analyze the incidence rate and DALYs.

Results

In 2019, the global ASIR and AS-DALYs for POP were 316.19 (95%UI: 259.84-381.84) and 10.37 (95%UI: 5.79-17.99) per 100,000 population, respectively. Moreover, from 1990 to 2019, the ASR of both showed a downward trend, and EAPCs were -0.46 (95%CI: -0.52 to -0.4) and -0.53 (95%CI: -0.58 to -0.47), respectively. In addition, DALYs of POP also showed a downward trend in most regions and countries with high SDI. From 1990 to 2019, the global incidence rate and DALYs rate were highest in the 65-75 and ≥60 age groups, respectively.

Conclusion

Over the past three decades, the incidence and DALY of POP have been decreasing from 1990 to 2019. However, POP remains a major health problem, especially among females in less developed countries. Primary and secondary prevention measures of POP should be integrated into the practice of healthcare professionals dealing with aging women.