The baseline data were obtained from hospital observation sheets and the patient’s medical files. The patient’s informed consent was a mandatory inclusion criterion. The identification data were not included in the database we developed, which is structured as follows:
-Personal data: age and area of residence.
-Obstetric/gynecological history: abortions/pregnancies and ante/perinatal complications.
-Details related to the current pregnancy: pregnancy follow-up or not, gestational age (GA) at the time of assessment, pregnancy-related disorders (hypertension, gestational diabetes, anemia, thrombocytopenia, and proteinuria), GA at which renal failure was diagnosed, and the mode of delivery (cesarean section/vaginal birth).
-Data regarding fetal parameters: complications during pregnancy (SGA/FGR), fetal birth weight, 1 min Apgar score, and neonatal intensive care admission.
-Data regarding the underlying disease that caused the CKD and the current treatment (hemodialysis) as the trigger factors for AKI.
-Data on the evolution of biochemical parameters (values of nitrogen retention on admission and its evolution during hospitalization).
-The need for dialysis during hospitalization.
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