Urinary and anal incontinence in pregnancy in a Nigerian population: A prospective longitudinal study

There are several studies from sub-Saharan Africa on postpartum urinary incontinence and anal incontinence, but very rare in pregnancy. Such data will guide obstetric caregivers in providing appropriate counseling to the women as well as in minimizing the risk factors. This study aimed to determine the comparative effects of different trimesters of pregnancy on urinary incontinence and anal incontinence, and their possible risk factors.

The study was longitudinal in design, and the study population consisted of 223 pregnant women receiving care at the two largest tertiary health institutions in Enugu, South-East Nigeria. The recruitment was in the first trimester and the women were followed up to term. Interviews were conducted at specific times in the three trimesters and data regarding urinary incontinence and anal incontinence symptoms were obtained using validated questionnaires.

The incidence of urinary incontinence increased across the trimesters: 22%, 30.5%, and 48% in the first trimester, second, and third trimesters, respectively, with a cumulative incidence rate of 50.2%. The incidence of anal incontinence also increased across the trimesters but not as high as urinary incontinence: 1.7%, 3.6%, and 5.8%, respectively, with a cumulative incidence rate of 6.7%. The risk factors for urinary incontinence were maternal age >35 years, multiparity, previous prolonged second-stage labor, and previous history of neonatal macrosomia, while that of anal incontinence were previous instrumental vaginal delivery and previous prolonged second stage of labor.

Our study demonstrated an increase in the incidence of urinary incontinence and anal incontinence as pregnancy advances. Obstetricians are therefore encouraged to discuss these pelvic floor issues during antenatal care services and make more efforts toward reducing the modifying obstetric risk factors.