Early continuous renal replacement therapy for acute kidney injury in a very low birth weight infant: a case report and literature review - Report - MDSpire

Early continuous renal replacement therapy for acute kidney injury in a very low birth weight infant: a case report and literature review

  • By

  • Yixin Zhang

  • Jinhui Hu

  • Juan Liu

  • Yu Ma

  • Zhaojun Pan

  • June 18, 2026

  • 0 min

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Clinical Report: Initiating Continuous Renal Replacement Therapy for AKI in VLBW Neonate

Overview

This report discusses the successful implementation of continuous renal replacement therapy (CRRT) in a very low birth weight (VLBW) neonate with acute kidney injury (AKI) due to perinatal asphyxia. The case highlights the importance of early intervention and meticulous management in improving renal function and hemodynamic stability.

Background

Acute kidney injury (AKI) is a significant complication in neonatal intensive care units, particularly among VLBW infants, with a high incidence and associated risks of long-term kidney disease. The immature renal function in these infants makes them particularly susceptible to AKI, necessitating effective renal replacement therapy (RRT) when conventional management fails. Continuous renal replacement therapy (CRRT) offers a potential solution, but its application in this vulnerable population remains challenging.

Data Highlights

ParameterBefore CRRTAfter CRRT
Urine Output (mL/(kg·h))0.113.9
Serum Creatinine (μmol/L)118.2055.20
Blood Urea Nitrogen (mmol/L)12.275.26

Key Findings

  • VLBW infants are at high risk for AKI, with an incidence of 18%-40% in NICUs.
  • Early CRRT can improve renal function and hemodynamic stability in VLBW infants with severe AKI.
  • The case study demonstrated significant improvements in urine output and serum creatinine levels after CRRT initiation.
  • Meticulous management during CRRT is crucial to ensure safety and efficacy of the treatment.
  • Fluid overload is an independent risk factor for mortality and organ dysfunction in this population.

Clinical Implications

Healthcare providers should consider early initiation of CRRT in VLBW infants with severe AKI when conventional therapies are ineffective. Close monitoring and individualized management strategies are essential to optimize outcomes and minimize risks associated with CRRT.

Conclusion

The successful application of CRRT in a VLBW neonate with AKI underscores the potential benefits of early intervention and careful management in this high-risk population. Further research is needed to establish standardized protocols for CRRT in neonates.

Related Resources & Content

  1. Intensive Care Medicine, 2025 -- Advancements in Renal Replacement Therapy Approaches
  2. Critical Care (Springer), 2025 -- Multidisciplinary guidelines on renal replacement therapy in intensive care medicine
  3. Critical Care (Springer), 2025 -- Diagnostic performance of a 250-ml net ultrafiltration challenge
  4. conexiant -- Acute Kidney Injury Therapies Reviewed
  5. 2024 Neonatal AKI Guidelines -- Acute Kidney Injury Guidelines 2024
  6. KDIGO 2026 AKI/AKD Guideline Public Review Draft
  7. BMJ Paediatrics Open -- Effectiveness and feasibility of continuous renal replacement therapy for acute kidney injury in neonates weighing 3 kg or less
  8. https://www.mombaby.org/wp-content/uploads/2021/05/Acute-Kidney-Injury-Guidelines-2024.pdf
  9. Topic
  10. Effectiveness and feasibility of continuous renal replacement therapy for acute kidney injury in neonates weighing 3 kg or less: a two-centre, retrospective study | BMJ Paediatrics Open

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