Frequency of adverse perinatal outcomes in patients with pregnancy related acute renal (kidney) injury in a tertiary care hospital.

Background & objective: Pregnancy related acute kidney injury (Pr-AKI) is coupled with adverse feto-maternal outcomes. Adverse perinatal outcome comprising of still births, intrauterine growth retardation, neonatal deaths are indicators of severity of underlying obstetrical conditions ending on Pr-AKI. These perinatal outcomes can also serve as potential predictors for long term outcomes of Pr-AKI. Our study aimed to determine frequencies of adverse perinatal outcomes and to evaluate adverse perinatal outcome as predictor for persistent renal injury in patients with pregnancy induced acute renal injury (Pr-AKI).

Method: A descriptive case series including 100 women with Pr-AKI, was conducted in a tertiary care hospital of Peshawar from 1st August 2021 to 31st July 2022. Included patients were followed for three months period, from their date of delivery. Adverse perinatal outcome included stillbirths, and early neonatal deaths.

Results: The mean age of study sample was 29.20±6.40. The pre dominant etiology for Pr-AKI was primary postpartum hemorrhage, occurring in 52% women. Still births were seen in 48% cases, while early neonatal deaths were seen in 7% cases. Adverse perinatal outcome had statistically significant association with persistent renal failure (p-0.01). Other factors having statistically significant association with persistent renal injury (PRF) were multiparity and cesarean births. (p<0.05) Association of adverse perinatal outcome with persistent renal injury persisted on multivariate logistic regression. a OR 6.14; CI 1.15-32.29, p-0.033.

Conclusion: Almost half of the cases with Pr-AKI have still births. Still birth in patients with Pr-AKI is associated with persistent renal injury at 12 weeks follow up period.