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Radiation exposure in extremely low birth weight infants during their neonatal intensive care unit stay

Narayan Prabhu Iyer1, Amy Baumann, Mark Stephen Rzeszotarski

  • 1Department of Pediatrics, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio 44109, USA.

World Journal of Pediatrics : WJP
|May 17, 2013
PubMed

Insights

Extremely low birth weight (ELBW) infants in the neonatal intensive care unit (NICU) receive significant diagnostic X-ray exposure. Monitoring radiation doses is crucial to prevent potential harm to these vulnerable infants.

Area of Science:

  • Neonatal care
  • Pediatric radiology
  • Medical physics

Background:

  • Extremely low birth weight (ELBW) infants (<1000 g) may exhibit heightened sensitivity to radiation.
  • Neonatal intensive care unit (NICU) stays involve diagnostic imaging procedures for ELBW infants.

Purpose of the Study:

  • To estimate the cumulative radiation exposure in surviving ELBW infants during their NICU hospitalization.
  • To identify factors associated with radiation exposure in ELBW infants.

Main Methods:

  • Retrospective cohort study analyzing medical records of ELBW infants admitted to a NICU.
  • Estimation of total entrance skin exposure (ESE) in micro-Gray (μGy) from X-ray procedures.
  • Correlation analysis between ESE and gestational age (GA), birth weight (BW), and illness severity (SNAPPE).

Main Results:

  • 450 ELBW survivors received a median of 32 X-rays, with a median ESE of 1471 μGy.
  • Total ESE was inversely correlated with GA and BW, and positively correlated with illness severity (SNAPPE).
  • Gestational age, SNAPPE, and necrotizing enterocolitis were significant predictors of radiation exposure in ELBW infants.

Conclusions:

  • ELBW infants undergo substantial diagnostic X-ray exposure during NICU care.
  • There is a critical need for vigilant monitoring of X-ray procedures in ELBW infants.
  • Minimizing unnecessary radiation exposure is essential for the well-being of ELBW infants.
Abstract

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