Dialysis in Pregnancy: Role of the Underlying Cause of Renal Failure on Peripartum Outcomes

Pregnancy on dialysis is rare and few studies in this population exist. Currently, pregnancy outcomes are thought to be related to dialysis intensity. We hypothesize women requiring dialysis due to diabetes or lupus will have worse pregnancy outcomes compared with other indications for dialysis.All women receiving dialysis during pregnancy from 2012 to 2016 in a single health system were identified. Differences in perinatal outcomes among those with renal failure caused by diabetes or lupus and with other causes were evaluated.Sixteen women were identified, seven with diabetes or lupus causing renal failure; the remaining nine women had hypertension, focal segmental glomerular sclerosis, polycystic kidney disease, congenital hypoplastic kidneys, or neurogenic bladder. The rates of composite maternal morbidity were similar among the two groups. Composite neonatal morbidity was higher in those with renal failure caused by diabetes or lupus compared with other causes (100% vs. 29%, p = 0.028).Despite similar dialysis intensity, the composite neonatal morbidity was higher in women with renal failure caused by diabetes or lupus compared with other etiologies. Our findings suggest that pregnancy outcome in women receiving dialysis is dependent on both the intensity of dialysis as well as the etiology of renal failure.