Laboratory Signs of CKD after Preeclampsia.

Area of Science:

• Obstetrics and Gynecology
• Nephrology
• Epidemiology

Background:

• Preeclampsia, a pregnancy-induced hypertensive disorder, is linked to long-term kidney failure risk.
• The association between preeclampsia and early-stage kidney disease is not well understood.
• This study investigates the risk of chronic kidney disease (CKD) markers following preeclamptic pregnancies.

Purpose of the Study:

• To quantify the risk of developing chronic kidney disease (CKD) markers after preeclampsia.
• To assess the incidence of albuminuria and decreased estimated Glomerular Filtration Rate (eGFR) post-preeclampsia.
• To evaluate postpartum kidney function monitoring rates in women with a history of preeclampsia.

Main Methods:

• Population-based cohort study in Stockholm, Sweden (2006-2020).
• Included nulliparous women with at least one pregnancy, excluding those with pre-existing hypertension, diabetes, or CKD.
• Used inverse probability of treatment weighting to control for confounding factors.
• Primary outcomes: albuminuria (>300mg/g), eGFR (<60ml/min/1.73m2), or a composite of both.

Main Results:

• The study analyzed 171,693 pregnancies; 6% were complicated by preeclampsia.
• Women with preeclampsia showed significantly higher incidence rates for albuminuria, reduced eGFR, and the composite outcome compared to those without.
• Weighted hazard ratios indicated a 2-2.5 times increased risk for these kidney damage markers following preeclampsia.
• Postpartum testing for kidney function (serum creatinine, urine albumin) was low in the first year after preeclampsia.

Conclusions:

• Preeclampsia is associated with an elevated risk of laboratory indicators of early kidney damage.
• There is a notable deficit in postpartum kidney function monitoring for women with a history of preeclampsia.
• Early detection and monitoring of kidney health post-preeclampsia are crucial for timely intervention.