[Model predicting failure in surgical repair of obstetric vesicovaginal fistula]

Obstetric fistula repair failure and its associated factors among women who underwent repair in sub-Saharan Africa. A systematic review and meta-analysis

BACKGROUND

Obstetric fistula repair failure can result in increased depression, social isolation, financial burden for the woman, and fistula care programs. However, there is limited, comprehensive evidence on obstetric fistula repair failure in Sub-Saharan African countries. This systematic review and meta-analysis aimed to determine the pooled prevalence of obstetric fistula repair failure and associated factors among women who underwent surgical repair in Sub-Saharan African countries.

METHODS

To identify potential articles, a systematic search was done utilizing online databases (PubMed, Hinari, and Google Scholar). The Preferred Reporting Items for Systematic Review and Meta-Analysis Statement (PRISMA) guideline was used to report the review's findings. I2 test statistics were employed to examine study heterogeneity. A random-effects model was used to assess the pooled prevalence of obstetric fistula repair failure, and the association was determined using the log odds ratio. Publication bias was investigated using the funnel plot and Egger's statistical test at the 5% level of significance. Meta-regression and subgroup analysis were done to identify potential sources of heterogeneity. The data were analyzed using STATA version 17 statistical software.

RESULTS

A total of 24 articles with 9866 study participants from 13 Sub-Saharan African countries were included in this meta-analysis. The pooled prevalence of obstetric fistula repair failure in sub-Saharan Africa was 24.92% [95% CI: 20.34-29.50%]. The sub-group analysis by country revealed that the highest prevalence was in Angola (58%, 95% CI: 53.20-62.80%) and the lowest in Rwanda (13.9, 95% CI: 9.79-18.01%). Total urethral damage [OR  =  3.50, 95% CI: 2.09, 4.91], large fistula [OR = 3.09, 95% CI: (2.00, 4.10)], duration of labor [OR = 0.45, 95% CI: 0.27, 0.76], and previous fistula repair [OR = 2.70, 95% CI: 1.94, 3.45] were factors associated with obstetric fistula repair failure.

CONCLUSION

Women who received surgical treatment for obstetric fistulas in Sub-Saharan African countries experienced more repair failures than the WHO standards. Obstetric fistula repair failure was affected by urethral damage, fistula size, duration of labor, types of fistula, and history of previous repairs. Therefore, we suggest policy measures specific to each country to provide special attention to the prevention of all risk factors, including poor nutrition, multiparty, obstructed labor, and maternal age, which can result in conditions like large fistulas, urethral damage, and repeat repair, in order to reduce obstetric fistula repair failure.

Women's views on obstetric fistula risk factors and prevention in north-central Nigeria: an interpretive descriptive study

OBJECTIVE

Obstetric fistula, also known as vesicovaginal fistula or rectovaginal fistula, is an abnormal opening between the vagina and rectum caused by prolonged obstructed labour that causes substantial long-term harm to women. It is most prevalent in low resource settings and although preventative measures have been proposed, they have not, to date, taken women's own views into account. The objective of this study was to explore the views of North Nigerian women on obstetric fistula risk factors and prevention.

DESIGN

This study was conducted using Interpretive Description methodology, which is a qualitative approach underpinned by Symbolic Interactionism. A semistructured questionnaire was used to explore the views of 15 women living with obstetric fistula about risk factors and prevention of the condition. Data were collected in one-to-one in-depth interviews conducted between December 2020 and May 2021. All interviews were audio-recorded and transcribed verbatim, and a thematic approach to data analysis was employed.

SAMPLING AND SETTING

The setting for this study was a fistula repair centre in north-central Nigeria. The sample was formed of a purposively selected 15 women who had experienced obstetric fistula at a repair Centre in north-central Nigeria.

RESULTS

Four core themes emerged from women's views on obstetric fistula risk factors and prevention: (1) Women's autonomy, (2) Economic empowerment, (3) Infrastructure/transportation and (4) Provision of skilled healthcare services.

CONCLUSION

The findings from this study highlight previously unknown women's views on obstetric fistula risk factors and prevention in north-central Nigeria. Analysis of insights from women's voices directly affected by obstetric fistula demonstrated that in their views and experiences, giving women autonomy (decision-making power) to choose where to birth safely, economic empowerment, enhancement of transportation/infrastructure and provision of skilled healthcare services may mitigate obstetric fistula in Nigeria.

Sub-Saharan African women's views and experiences of risk factors for obstetric fistula: a qualitative systematic review

Background

Obstetric fistula used as synonymous with VVF in this study, is an abnormal communication/hole between the urinary tract and the genital tract or the gastrointestinal tract and the genital tract, resulting from prolonged obstructed labour. VVF may cause sufferers to experience chronic urinary/faecal incontinence, and the stigma of continuing foul odour. VVF is primarily caused by prolonged obstructed labour, which is brought about by a range of causes. Recently, it has been proposed that women’s groups and fistula survivors should suggest interventions to reduce or prevent the incidence of obstetric fistula.

Objective

The objective of this review was to synthesise what is reported about women’s views and experiences of the risk factors underlying the causes of VVF.

Methods

A systematic approach outlined in the Joanna Briggs Institute Manual for Evidence synthesis was followed for this review, articles published since the last 11 years from 2011 to 2021 were selected against several criteria and critically appraised using JBI Critical Appraisal Checklist for qualitative studies.

Results

Nine studies were retained for inclusion in this review and the data were then synthesised into five themes: (1) Cultural beliefs and practices impeding safe childbirth, (2) Lack of woman’s autonomy in choices of place to birth safely, (3) Lack of accessibility and social support to safe childbirth, (4) Inexperienced birth attendants and, (5) Delayed emergency maternal care (childbirth).

Conclusions

This review highlights the complexity of risk factors predisposing women to the known causes of VVF. It also illuminates the absence of women’s voices in the identification of solutions to these risks. Women are most directly affected by VVF. Therefore, their knowledge, views, and experiences should be considered in the development and implementation of strategies to address the issue. Exploring women’s views on this issue would enable the identification of gaps in maternity care provision, which would be of interest to community and health service leaders as well as policymakers in Sub-Saharan Africa.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12884-022-05013-2.

[Prognostic factors for failure of transvaginal repair of vesicovaginal fistula: A nested case-control study]

OBJECTIVE

To analyze the prognostic factors affecting the failure of transvaginal repair of vesicovaginal fistula (VVF).

METHODS

A retrospective nested case-control study was conducted. A total of 15 patients who underwent unsuccessful transvaginal vesicovaginal fistula repair in the Department of Urology, Peking University First Hospital from January 2014 to December 2020 were enrolled as the case group. A total of 60 patients receiving transvaginal vesicovaginal fistula repair by the same surgeon within the same time range, were selected as the control group. The age, body mass index (BMI), etiology of vesicovaginal fistula, associated genitourinary malformation, frequency of repair, characteristics of fistula, surgical procedure, postoperative recovery and other factors were compared between the case group and the control group, and the influencing factors of failure were analyzed.

RESULTS

The BMI of the case group was (26.3±3.9) kg/m², the diameter of vaginal fistula was (1.5±0.8) cm, and the operative time of transvaginal repair was (111.8±19.8) min. The proportion of the patients with genitourinary malformations was 4/15, the proportion of the patients with multiple vaginal repairs was 13/15, the proportion of the patients with concurrent ureteral reimplantation was 6/15, and the proportion of the patients with postoperative fever was 5/15. In the control group, the BMI was (23.9±3.0) kg/m², the diameter of vaginal fistula was (0.8±0.5) cm, the operative time of transvaginal repair was (99.9±19.7) min, the rate of associated genitourinary malformation was 2/60, the rate of multiple transvaginal repair was 18/60, the rate of concurrent ureteral reimplantation was 5/60, and no postoperative fever was found. Compared with the control group, the case group had higher BMI (P=0.013), bigger vaginal fistula (P=0.002), longer time of operation (P=0.027), higher proportion of genitourinary malformations (P=0.013), higher proportion of repeated transvaginal repair (P < 0.001), higher proportion of ureter reimplantation (P=0.006), and higher proportion of postoperative fever (P < 0.001). Multivariate analysis showed that fistula diameter ≥1 cm (OR=10.45, 95%CI=1.90-57.56, P=0.007) and repeated transvaginal repair (OR=16.97, 95%CI=3.17-90.91, P=0.001) were independent prognostic factors for VVF failure in transvaginal repair.

CONCLUSION

Fistula diameter ≥1 cm and repeated transvaginal repair are independent prognostic factors of failure in transvaginal repair.