Predicting the risk of failure of closure of obstetric fistula and residual urinary incontinence using a classification system

Urinary incontinence following obstetric fistula repair

Prolonged and/or obstructed labour is the most common cause of genital tract fistula world-wide, in particular, sub-Saharan Africa and parts of Asia where emergency obstetric services are unavailable or suboptimal to afford timely delivery of the baby. This results in pressure necrosis by the fetal presenting part at the level of the obstruction in the maternal pelvis. Other reasons for obstetric fistula include trauma from vaginal deliveries (spontaneous or instrumental) and iatrogenic from cesarean section/hysterectomy. The majority of women develop the fistula during their first labour and most babies are stillborn. Women with a fistula suffer from leakage of urine and/or faeces from the vagina and surgery is the treatment for an established fistula. Long-term complications of fistulas include recurrent fistula, urinary incontinence, reproductive dysfunction, sexual dysfunction, mental health dysfunction, social isolation and orthopaedic complications such as footdrop. Ongoing urinary symptoms are not uncommon after successful fistula closure. There are various reasons for residual urinary incontinence following obstetric fistula repair including urinary stress incontinence, overactive bladder, mixed urinary incontinence and voiding dysfunction. Urinary incontinence after fistula repair requires careful evaluation prior to further surgery, as in some diagnoses, continence surgery is unlikely to treat and may worsen the condition. Initial results from educational and physiotherapy programs demonstrated a positive impact on post-fistula incontinence.

Obstetric fistula management and predictors of successful closure among women attending a public tertiary hospital in Rwanda: a retrospective review of records

BACKGROUND

Globally, 50,000-100,000 women develop obstetric fistula annually. At least 33,000 of these women live in Sub-Saharan Africa where limitations in quality obstetric care and fistula corrective repairs are prevalent. Among women with fistula seeking care at public health facilities in resource-limited settings, there is paucity of data on quality of care received. The aim of this study was to characterize obstetric fistula among Rwandan women managed at a public tertiary hospital and evaluate for predictors of successful fistula closures.

METHODS

A retrospective review of records for all obstetric fistula women managed at a public referral health facility between 2007 and 2013 was performed. Patient socio-demographics, obstetric characteristics and fistula repair outcomes data were reviewed. A multivariate logistic regression model was used to analyse for predictors of successful fistula repair outcomes.

RESULTS

A total of 272 women aged between 16 to 78 years and with a mean age of 34.6 years were included. Of these, 93 (34.2 %), 48 (17.6 %), 65 (24 %) and 64 (23 %) women had vesico-vaginal fistula, recto-vaginal fistula, urethro-vaginal fistula and vesico-uteral fistula types, respectively. Successful fistula closure was achieved among 86.3 %. Women with fistula who reported being in labour for ≥3 days, having ≥1 previous fistula repair attempt, and having lived with the fistula for >1 year, had significantly lower odds of successful repair outcomes.

CONCLUSIONS

Among 272 women with obstetric fistula managed in this study, 69.5 and 26.5 % of their fistula were causally associated with obstructed labour complications and iatrogenic factors, respectively. Successful fistula closure rates of about 89 % among women of index repair attempt were achieved. Conversely, reported histories of ≥3 days in labour, ≥1 previous failed attempts at repair and a fistula duration of >1 year, were significant determinants of failed fistula closures. To effectively mitigate obstetric fistula burden in Rwanda, a comprehensive package of services including quality emergency obstetric care, increased availability of and access to quality fistula repair, active surveillance to identify community-based women with fistula and a strong political will towards effective fistula care, are recommended.