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Association of intrauterine growth restriction and low birth weight with acute kidney injury in preterm neonates.
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- Author(s): Sinelli, Mariateresa1 ; Zannin, Emanuela1; Doni, Daniela1; Ornaghi, Sara2,3; Acampora, Eleonora2; Roncaglia, Nadia2; Vergani, Patrizia2,3; Ventura, Maria Luisa1
- Source:
Pediatric Nephrology. Sep2023, Vol. 38 Issue 9, p3139-3144. 6p. 4 Charts, 1 Graph.
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- Abstract:
Background: Preterm birth alters nephrogenesis and reduces the total nephron number. Intrauterine growth restriction (IUGR) seems to worsen nephron loss, but only a few studies have investigated its role in neonatal kidney impairment. We investigated whether IUGR, defined as reduced estimated fetal growth and/or placental flow alterations and low birth weight z-score, increases the risk of developing acute kidney injury (AKI) in very preterm infants. Methods: We performed a retrospective study including infants born with a birth weight (BW) ≤ 1500 g and/or gestational age (GA) ≤ 32 weeks admitted to our center between January 2016 and December 2021. Neonatal AKI was defined according to the neonatal KDIGO classification based on the decline of urine output and/or creatinine elevation. We used multivariable linear regressions to verify the association between AKI and GA, BW z-score, IUGR definition, and hemodynamically significant patent ductus arteriosus (PDA). Results: We included 282 infants in the analysis, with a median (IQR) GA = 29.4 (27.4, 31.3) weeks, BW = 1150 (870, 1360) g, and BW z-score = − 0.57 (− 1.64, 0.25). AKI was diagnosed in 36 (13%) patients, and 58 (21%) had PDA. AKI was significantly associated with BW z-score (beta (std. error) = − 0.08 (0.03), p = 0.008) and severe IUGR (beta (std. error) = 0.21 (0.08), p = 0.009), after adjusting for GA and PDA. Conclusions: Our data suggest that low BW z-score and IUGR could represent adjunctive risk factors for kidney impairment in preterm babies. [ABSTRACT FROM AUTHOR]
- Abstract:
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