C-reactive protein and haemoglobin level in acute kidney injury among preterm newborns

Fiva Aprilia Kadi1, Tetty Yuniati1, Yunia Sribudian1

  • 1Department of Child Health, Universitas Padjadjaran Medical School/Dr Hasan Sadikin General Hospital, Bandung, West Java, Indonesia.

Insights

C-reactive protein (CRP) and hemoglobin (Hb) can predict acute kidney injury (AKI) in preterm newborns. Elevated CRP and low Hb levels serve as an early warning for AKI risk.

Area of Science:

  • Neonatal Medicine
  • Biomarkers
  • Nephrology

Background:

  • Acute kidney injury (AKI) is a significant concern in preterm newborns.
  • Early detection and risk assessment of AKI are crucial for improving outcomes.
  • Biomarkers like C-reactive protein (CRP) and hemoglobin (Hb) are being investigated for their predictive potential.

Purpose of the Study:

  • To evaluate the role of C-reactive protein (CRP) and hemoglobin (Hb) in predicting and assessing the risk of acute kidney injury (AKI) in preterm infants.
  • To identify cost-effective methods for early AKI detection in neonates.

Main Methods:

  • A case-control study involving 112 preterm infants was conducted.
  • Infants were categorized into groups with and without AKI based on neonatal KDIGO criteria.
  • Serum CRP and creatinine levels were measured at specific intervals post-birth; routine blood counts including Hb were performed within 24 hours.

Main Results:

  • Increased C-reactive protein (CRP) was the most significant predictor of AKI, demonstrating 80.6% sensitivity and 60.2% specificity.
  • An elevated CRP level (>0.04) was associated with a 5.64-fold increased odds of AKI (aOR: 5.64, 95% CI: 1.89-16.84).
  • Hemoglobin (Hb) levels below 14.5 g/dL showed a slightly increased odds of AKI (aOR: 1.65, 95% CI: 1.05-8.63).

Conclusions:

  • Elevated CRP levels (>0.04) and low hemoglobin (<14.5 g/dL) are acceptable early warning indicators for AKI in preterm newborns.
  • These biomarkers offer a potential strategy for early risk assessment and intervention in neonatal AKI.

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