Abstract
Background
Various perinatal morbidities may adversely affect postnatal nephrogenesis in preterm infants. Kidney ultrasonographic findings following acute kidney injury (AKI) have not been well described in preterm infants. Herein, we describe three cases of extremely preterm infants who showed abnormal kidney ultrasonographic findings resembling dysplasia of the kidneys following AKI.
Case-diagnosis/treatment
Their median gestational age and birth weight were 25+6 (range 23+3–26+6) weeks and 620 (480–840) g, respectively. All infants suffered severe AKI during their third to seventh week of life. Their kidney function recovered with conventional management. Kidney ultrasonographies performed after AKI revealed increased kidney echogenicity, loss of corticomedullary differentiation, and multiple cortical cysts, which were similar to cystic dysplasia of the kidneys and were absent in previous kidney imaging. Three infants eventually developed at least one of the long-term kidney sequelae following AKI, including proteinuria, hypertension, and elevated levels of serum creatinine or cystatin C as determined during the last follow-up at the corrected age of 9–18 months.
Conclusions
Based on these cases, we can infer that AKI occurring during the early postnatal period may result in dysplasia of the kidneys with cortical cysts in extremely preterm infants, which may lead to chronic kidney disease in their later life. It is useful to follow up not only laboratory parameters but also kidney ultrasonographic findings in extremely preterm infants who suffered AKI during their early postnatal periods.
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Data availability
All data and material generated or analyzed during this study are included in this published article.
References
Jetton JG, Boohaker LJ, Sethi SK, Wazir S, Rohatgi S, Soranno DE, Chishti AS, Woroniecki R, Mammen C, Swanson JR, Sridhar S, Wong CS, Kupferman JC, Griffin RL, Askenazi DJ, Neonatal Kidney Collaborative (NKC) (2017) Incidence and outcomes of neonatal acute kidney injury (AWAKEN): a multicentre, multinational, observational cohort study. Lancet Child Adolesc Health 1:184–194
Carmody JB, Swanson JR, Rhone ET, Charlton JR (2014) Recognition and reporting of AKI in very low birth weight infants. Clin J Am Soc Nephrol 9:2036–2043
Stojanovic V, Barisic N, Milanovic B, Doronjski A (2014) Acute kidney injury in preterm infants admitted to a neonatal intensive care unit. Pediatr Nephrol 29:2213–2220
Abitbol CL, Bauer CR, Montane B, Chandar J, Duara S, Zilleruelo G (2003) Long-term follow-up of extremely low birth weight infants with neonatal renal failure. Pediatr Nephrol 18:887–893
Chevalier RL (1996) Developmental renal physiology of the low birth weight pre-term newborn. J Urol 156:714–719
Sutherland MR, Gubhaju L, Moore L, Kent AL, Dahlstrom JE, Horne RS, Hoy WE, Bertram JF, Black MJ (2011) Accelerated maturation and abnormal morphology in the preterm neonatal kidney. J Am Soc Nephrol 22:1365–1374
Rosenblum S, Pal A, Reidy K (2017) Renal development in the fetus and premature infant. Semin Fetal Neonatal Med 22:58–66
Riccabona MJUC (2006) Renal failure in neonates, infants, and children: the role of ultrasound 1:457-469
Abitbol CL, DeFreitas MJ, Strauss J (2016) Assessment of kidney function in preterm infants: lifelong implications. Pediatr Nephrol 31:2213–2222
Abitbol CL, Seeherunvong W, Galarza MG, Katsoufis C, Francoeur D, Defreitas M, Edwards-Richards A, Master Sankar Raj V, Chandar J, Duara S, Yasin S, Zilleruelo G (2014) Neonatal kidney size and function in preterm infants: what is a true estimate of glomerular filtration rate? J Pediatr 164(1026–1031):e1022
Crump C, Sundquist J, Winkleby MA, Sundquist K (2019) Preterm birth and risk of chronic kidney disease from childhood into mid-adulthood: national cohort study. BMJ 365:l1346
Rodriguez MM, Gomez AH, Abitbol CL, Chandar JJ, Duara S, Zilleruelo GE (2004) Histomorphometric analysis of postnatal glomerulogenesis in extremely preterm infants. Pediatr Dev Pathol 7:17–25
Chaturvedi S, Ng KH, Mammen C (2017) The path to chronic kidney disease following acute kidney injury: a neonatal perspective. Pediatr Nephrol 32:227–241
Greenbaum LA, Munoz A, Schneider MF, Kaskel FJ, Askenazi DJ, Jenkins R, Hotchkiss H, Moxey-Mims M, Furth SL, Warady BA (2011) The association between abnormal birth history and growth in children with CKD. Clin J Am Soc Nephrol 6:14–21
Selewski DT, Charlton JR, Jetton JG, Guillet R, Mhanna MJ, Askenazi DJ, Kent AL (2015) Neonatal acute kidney injury. Pediatrics 136:e463–e473
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Seh Hyun Kim and Yo Han Ahn. The first draft of the manuscript was written by Seh Hyun Kim, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The study was approved by the Institutional Review Board of the Seoul National University Bundang Hospital (IRB No. B-1912/580-701).
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Kim, S.H., Ahn, Y.H., Shin, J. et al. Cystic dysplasia of the kidneys in extremely preterm infants following acute kidney injury. Pediatr Nephrol 35, 2369–2372 (2020). https://doi.org/10.1007/s00467-020-04737-7
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DOI: https://doi.org/10.1007/s00467-020-04737-7