4.6 Article

A Higher Incidence of Intermittent Hypoxemic Episodes Is Associated with Severe Retinopathy of Prematurity

Journal

JOURNAL OF PEDIATRICS
Volume 157, Issue 1, Pages 69-73

Publisher

MOSBY-ELSEVIER
DOI: 10.1016/j.jpeds.2010.01.046

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Funding

  1. National Institute of Child Health and Human Development Cooperative Multicenter Neonatal Research Network [HD021364-23]
  2. Case Western Reserve University/Cleveland Clinic (CTSA) [UL1 RR024989]
  3. National Center for Research Resources (NCRR)
  4. National Institutes of Health (NIH)
  5. NIH Roadmap for Medical Research

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Objective Retinopathy of prematurity (ROP), a vasoproliferative disorder of the retina in preterm infants, is associated with multiple factors, including oxygenation level. We explored whether the common intermittent hypoxemic events in preterm infants are associated with the development of ROP. Study design Oxygen desaturation events were quantified in 79 preterm infants (gestational age, 24 to 27-6/7 weeks) during the first 8 weeks of life. Infants were classified as requiring laser treatment for ROP versus having less severe or no ROP. A linear mixed model was used to study the association between the incidence of intermittent hypoxia and laser treatment of ROP, controlling for gestational age, sex, race, multiple births, and initial severity of illness. Results For all infants, hypoxemic events increased with postnatal age (P<.001). Controlling for all covariates, a higher incidence of oxygen desaturation events was found in the infants undergoing laser therapy for ROP (P<.001), males (P<.02), and infants of younger gestational age (P<.003). Conclusions The incidence of hypoxemic events was higher in infants with ROP requiring laser therapy. Therapeutic strategies to optimize oxygenation in preterm infants should include minimization of desaturation episodes, which may in turn decrease serious morbidity in this high-risk population. (J Pediatr 2010; 157: 69-73).

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