The Microcirculation of Vaginal Tissue in Women with Obstetric Vesicovaginal Fistula and Short-Term Effects of Surgical Repair on Microvascular Parameters

OBJECTIVES

The objective of the study was to better understand the extent of the ischemic trauma and the effects of surgical repair on the vaginal microcirculation in patients with obstetric vesicovaginal fistula (VVF).

DESIGN

In this observational study, we evaluated the vaginal microvasculature surrounding VVF using handheld vital microscopy (HVM) before, during, and 2 weeks after surgical VVF repair.

PARTICIPANTS

Seventeen women undergoing VVF repair were included in this study.

SETTING

The study was conducted in the Fistula Care Centre in Lilongwe, Malawi.

METHODS

We used HVM with incident dark-field imaging to non-invasively visualize the microvasculature of the vaginal tissue surrounding fistulas. The primary outcome was the presence of microvascular flow. Secondary outcomes included angioarchitecture, fistula closure (postoperative dye test), and urinary continence (pad weight test).

RESULTS

Microvascular flow was present before, during, and after surgical repair in, respectively, 83.8%, 83.9%, and 93.4% of obtained image sequences. The angioarchitecture was normal in 75.8% of the image sequences before surgery, 69.4% at fistula closure, and 89.1% two weeks after VVF repair. Fourteen (82.4%) patients had a closed fistula after surgical repair.

LIMITATIONS

The study was limited by the lack of a control group and the relatively small sample size.

CONCLUSION

Although the vaginal microcirculation in women with VVF is compromised, extensive ischemic damage is not observed in the tissue surrounding fistulas. This suggests significant regenerative capacity of the vaginal vasculature in young women, or less extensive ischemic damage than presumed. Following surgical repair, we observed improvement of microcirculatory flow and angioarchitecture, suggesting that surgery is a good option for patients with obstetric VVF.

Urinary tract reconstruction for iatrogenic fistula secondary to radical hysterectomy: Cases from Malawi's Fistula Care Center

Complications from radical hysterectomy in low-income countries (LICs) are largely unreported in the medical literature. We report on three cases of urinary tract reconstruction performed at the Fistula Care Center (FCC) in Lilongwe, Malawi for iatrogenic fistula following radical hysterectomy. These cases demonstrate the diversity and complexity of reconstruction techniques required and emphasize the need for careful tracking of surgical outcomes of radical hysterectomy.

Continence, quality of life and depression following surgical repair of obstetric vesicovaginal fistula: a cohort study

OBJECTIVE

We evaluated residual incontinence, depression, and quality of life among Malawian women who had undergone vesicovaginal fistula (VVF) repair 12 or more months previously.

DESIGN

Prospective cohort study.

SETTING

Fistula Care Centre in Lilongwe, Malawi.

POPULATION

Women who had undergone VVF repair in Lilongwe, Malawi at least 12 months prior to enrolment.

METHODS

Self-report of urinary leakage was used to evaluate for residual urinary incontinence; depression was evaluated with the Patient Health Questionnaire-9; quality of life was evaluated with the King's Health Questionnaire.

MAIN OUTCOME MEASURES

Prevalence and predictors of residual incontinence, quality of life scores, and prevalence of depression and suicidal ideation.

RESULTS

Fifty-six women (19.3%) reported residual urinary incontinence. In multivariable analyses, predictors of residual urinary incontinence included: pre-operative Goh type 3 [adjusted risk ratio (aRR) 2.82; 95% confidence interval (CI) 1.61-5.27) or Goh type 4 1.08-2.78), positive postoperative cough stress test (aRR = 2.42; 95% CI 1.24-4.71) and the positive 1-hour postoperative pad test (aRR = 2.20; 95% CI 1.08-4.48). Women with Goh types 3 and 4 VVF reported lower quality of life scores. Depressive symptoms were reported in 3.5% of women; all reported residual urinary incontinence.

CONCLUSIONS

While the majority of women reported improved outcomes in the years following surgical VVF repair, those with residual urinary incontinence had a poorer quality of life. Services are needed to identify and treat this at-risk group.

TWEETABLE ABSTRACT

Nearly one in five women reported residual urinary incontinence at follow up, 12 or months after vesicovaginal fistula repair.

Randomized Controlled Trial: Prophylactic Autologous Fascia Sling for Women at Risk of Urethral Incontinence after Obstetric Fistula Repair

Aims: To compare sling types as anti-incontinence procedure for women with obstetric fistulas at high-risk for residual incontinence. Methods: This is a multiple-site randomized controlled trial comparing autologous fascia slings to pubococcygeal (PC) slings at time of fistula repair. Participants with a Goh type 3 or 4 vesico-vaginal fistula (urethral length <2.5 cm) with no prior repair were randomized to receive either a rectus fascia sling or a PC sling while undergoing fistula repair. Interviews were performed before surgery and at follow up including the Michigan incontinence symptom index (M-ISI) and the Incontinence quality of life tool (I-QOL). Safety analysis was performed after ten participants have been enrolled in each arm. Results: Eleven participants randomized to a PC sling and ten to a rectus sling. There was one repair breakdown in the PC group and three in the rectus group. Pad weights trended lower in the rectus group. QOL and MISI scores improved significantly for both groups. The study was terminated at safety analysis due to the number of breakdowns and difficulty of follow-up at one site. Conclusions: There was no superiority between slings. Randomization proved problematic given the vast heterogeneity between fistula injuries. When compared to slings placed after an initial VVF repair in the literature, continence rate with the prophylactic rectus fascia sling was improved. There is a need for an innovative prophylactic anti-incontinence technique that does not result in repair failure.

Fertility outcomes following obstetric fistula repair: a prospective cohort study

BACKGROUND

Obstetric fistula (OF) is a maternal morbidity associated with high rates of stillbirth, amenorrhea, and sexual dysfunction. Limited data exists on the reproductive outcomes of women in the years following a fistula repair. The objective of this study is to describe the fertility outcomes and family planning practices in a population of Malawian women 1-4 years after fistula repair.

METHODS

Women who had enrolled into a clinical database of OF patients and undergone OF repair between January 1, 2012 and July 31, 2014 were recruited and enrolled to complete a home-based survey of their demographic and reproductive health data 1-4 years after their repair. Pregnancy, amenorrhea, and sexual function were described using frequency analysis, and we compared antimüllerian hormone (AMH) concentrations between women with menses or pregnancy with women with amenorrhea or no pregnancy using Wilcoxon rank sum tests.

RESULTS

Of 297 women with a prior OF repair, 148 had reproductive potential and were included in this analysis. Overall 30 women of these women (21%) became pregnant since their fistula repair, with most pregnancies ending with cesarean delivery. Of the 32 women who were amenorrheic at the time of repair, 25 (78.1%) had resumption of menses. Only 11 (8.6%) of sexually active women reported dyspareunia, and among women who were not trying to conceive, 53.1% were currently using a method of family planning. No significant differences were found in AMH concentrations between those who were pregnant or had menses versus those without pregnancy or menses, respectively.

CONCLUSIONS

In this long-term follow-up study of women after OF repair, many women were able to achieve a pregnancy with a live birth, have normal menses, be sexually active, and access contraception. These achievements will further assist a population of women whose reintegration and restoration of dignity is closely tied to their ability to achieve their reproductive goals.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT02685878 .

Contraceptive knowledge, use and intentions of Malawian women undergoing obstetric fistula repair

OBJECTIVES

Unintended pregnancy contributes to morbidities, such as obstetric fistula. Furthermore, after fistula repair, women should avoid pregnancy for a year to prevent its breakdown. Our study objective was to evaluate the contraceptive knowledge, practices and intentions of women undergoing obstetric fistula repair at a centre in Malawi.

METHODS

This cross-sectional study used a standardised survey to examine the contraceptive knowledge, practices and intentions of women undergoing obstetric fistula repair in Lilongwe, Malawi, between September 2011 and November 2014. Log binomial models were used to examine correlates of prior and planned contraceptive use.

RESULTS

The analysis included 569 women, of whom 61.3% had heard of, and 38.7% had used a modern method of contraception. Women aged 20-49 years, married, with secondary education or higher and with living children were significantly more likely to report prior use of a modern contraceptive method. Of the 354 women who still had reproductive potential (premenopausal women who had not undergone sterilisation) and answered questions on future contraceptive use, less than half (41.6%) planned to use a modern method of contraception after fistula repair. Planned modern contraceptive use was significantly associated with being currently married and having secondary education or higher.

CONCLUSIONS

Contraceptive knowledge, prior use and planned future use were low in our study population. To increase contraceptive use among women undergoing obstetric fistula repair, interventions in the postoperative period must seek to increase their family planning knowledge and access to contraceptive methods.

Use of a postoperative pad test to identify continence status in women after obstetric vesicovaginal fistula repair: a prospective cohort study

OBJECTIVE

Determine whether a 1-hour pad test at discharge can identify continence status within 120 days of obstetric vesicovaginal fistula (VVF) repair.

DESIGN

Prospective cohort study.

SETTING

Fistula Care Centre in Lilongwe, Malawi.

POPULATION

Women with VVF who underwent repair between January 2012 and December 2014.

METHODS

Data on demographics, obstetric history, physical exam findings, operative management, postoperative findings, and follow up evaluations were collected on women with VVF repair.

MAIN OUTCOME MEASURES

Sensitivity, specificity, positive and negative predictive values (PPV and NPV), and a receiver operating curve (ROC) were calculated to assess the utility of using a discharge pad test at three thresholds to identify women likely to be continent at follow up.

RESULTS

After VVF repair, 346 women had a 1-hour pad test performed at the time of hospital discharge and completed follow up within 120 days of repair. Of these, 79.8% (n = 276) were completely continent, whereas 20.2% (n = 70) had some degree of incontinence. The sensitivity and specificity of a negative 1-hour pad test at predicting continence is 68.1% and 82.9%, respectively. With this prevalence, a negative pad test at a 1.5-g threshold demonstrates a high predictive value (PPV = 94.0%, 95% CI 90.0-96.9) in detecting women with continence after repair.

CONCLUSIONS

At the 1.5-g threshold, a negative pad test at discharge identifies 94% of women who will remain continent after VVF repair. Adding the pad test to fistula care can identify women who are likely to remain continent and may not need further therapies in settings where resources are limited and follow up after repair is difficult.

TWEETABLE ABSTRACT

A negative pad test after repair is associated with continued continence at follow up.

Association between parity and fistula location in women with obstetric fistula: a multivariate regression analysis

OBJECTIVE

To compare primiparous and multiparous women who develop obstetric fistula (OF) and to assess predictors of fistula location.

DESIGN

Cross-sectional study.

SETTING

Fistula Care Centre at Bwaila Hospital, Lilongwe, Malawi.

POPULATION

Women with OF who presented between September 2011 and July 2014 with a complete obstetric history were eligible for the study.

METHODS

Women with OF were surveyed for their obstetric history. Women were classified as multiparous if prior vaginal or caesarean delivery was reported. The location of the fistula was determined at operation: OF involving the urethra, bladder neck, and midvagina were classified as low; OF involving the vaginal apex, cervix, uterus, and ureters were classified as high.

MAIN OUTCOME MEASURES

Demographic information was compared between primiparous and multiparous women using chi-squared and Mann-Whitney U-tests. Multivariate logistic regression models were implemented to assess the relationship between variables of interest and fistula location.

RESULTS

During the study period, 533 women presented for repair, of which 452 (84.8%) were included in the analysis. The majority (56.6%) were multiparous when the fistula formed. Multiparous women were more likely to have laboured <1 day (62.4 versus 44.5%, P < 0.001), delivered a live-born infant (26.8 versus 17.9%, P = 0.026), and have a high fistula location (37.5 versus 11.2%, P < 0.001). Multiparity [adjusted odds ratio (aOR) = 4.55, 95% confidence interval (CI) 2.27-9.12)] and history of caesarean delivery (aOR = 4.11, 95% CI 2.45-6.89) were associated with development of a high fistula.

CONCLUSIONS

Multiparity was common in our cohort, and these women were more likely to have a high fistula. Additional research is needed to understand the aetiology of high fistula including potential iatrogenic causes.

TWEETABLE ABSTRACT

Multiparity and caesarean delivery were associated with a high tract fistula in our Malawian cohort.