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Related Experiment Videos

Renal calcification in preterm infants: pathophysiology and long-term sequelae.

F Ezzedeen1, R D Adelman, C E Ahlfors

  • 1Department of Pediatrics, School of Medicine, University of California, Sacramento 95817.

The Journal of Pediatrics
|September 1, 1988
PubMed
Summary

Nephrocalcinosis in preterm infants receiving loop diuretics often resolves but can persist. Renal function may be compromised despite calcification improvement, highlighting the need for ongoing monitoring.

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Area of Science:

  • Neonatology
  • Pediatric Nephrology
  • Pharmacology

Background:

  • Preterm infants with chronic lung disease often require loop diuretics.
  • Loop diuretic use is associated with an increased risk of nephrocalcinosis.
  • Nephrocalcinosis is a significant concern in the long-term health of preterm infants.

Purpose of the Study:

  • To examine the clinical course and outcomes of nephrocalcinosis in preterm infants treated with loop diuretics.
  • To assess the resolution of renal calcification and its impact on renal function over time.
  • To identify risk factors associated with nephrocalcinosis in this vulnerable population.

Main Methods:

  • Retrospective analysis of 17 preterm infants with chronic lung disease and nephrocalcinosis.
  • Evaluation of clinical data, including diuretic use and risk factors.

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  • Serial assessments of renal calcification, renal length, and renal function (serum creatinine, GFR) via imaging and laboratory tests.
  • Main Results:

    • Nephrocalcinosis was diagnosed at a mean age of 12 weeks and associated with furosemide therapy and multiple risk factors.
    • In nine infants followed for up to 4.5 years, calcification improved in five, with four showing complete resolution.
    • Renal length was normal in most kidneys, but abnormal renal function (creatinine, GFR) was noted in four of nine patients.

    Conclusions:

    • Renal calcification in preterm infants is linked to risk factors including furosemide, and tends to decrease in the first year.
    • While calcification may resolve, some infants may experience persistent renal function impairment.
    • Long-term monitoring of renal function is crucial for preterm infants who develop nephrocalcinosis.