Postpartum urinary retention and its associated obstetric risk factors among women undergoing vaginal delivery in tertiary care hospital.

Postpartum urinary retention (PUR) is not an uncommon consequence of bladder dysfunction after vaginal delivery. Despite its ubiquity, morbidity and discomfort brought to the postpartum women, it's a poorly discussed condition. Patients with Overt PUR are unable to void spontaneously within 6h of vaginal delivery and those with Covert PUR are able to void spontaneously but have a post void residual bladder volume (PVRV) of >150mL. Reported incidences of PUR vary widely ranging from 1.7 %-17.9 %. To identify the prevalence and obstetric risk factors for PUR after vaginal delivery in order to identify women with increased risk of PUR. The PVRV of women who delivered vaginally was measured after the first spontaneous micturition by ultrasonography. PVRV of more than 150mL was considered as covert PUR. Patient data including age, obstetric history, mode of delivery, duration of labor, PVRV were compared between women with and those without PUR. Of 878 included women, the overall prevalence of PUR after vaginal delivery was 12.9 %, the prevalence of overt and covert PUR were 1.8 % and 11.04 % respectively. Parturient who were primigravidae, had perineal injury, instrumental delivery, birth weight >3.5kg and a longer duration of second stage of labor were risk factors for developing PUR. Any misdiagnosis or delay in diagnosis of PUR can cause bladder over distension leading to irreversible detrusor damage. Hence vigilant monitoring and early detection of PUR helps in facilitating timely interventions and prevention of immediate and long term sequelae.

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