Long term consequences of oxygen therapy in the neonatal period.
Preterm and term infants are frequently exposed to high concentrations of oxygen for prolonged periods. In experimental models, high and prolonged oxygen exposures cause delayed alveolar septation and a bronchopulmonary dysplasia phenotype. Often, however, the oxygen exposure is tolerated in that the infants recover without severe lung or systemic injury. Multiple exposures change oxygen sensitivity in adult and newborn animals. Examples are antenatal corticosteroids, inflammatory mediators or preconditioning with oxygen, which will increase tolerance to oxygen injury. Intrauterine growth restriction or postnatal nutritional deficits will increase oxygen injury. Different infants probably have quite variable sensitivities to oxygen injury, but there are no biomarkers available to predict the risk of oxygen injury.
Jobe
Alan H
AH
Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio 45229-3039, USA. alan.jobe@chmcc.org
Kallapur
Suhas G
SG
D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000818:Animals; D001997:Bronchopulmonary Dysplasia / Q000378:metabolism; D004195:Disease Models, Animal; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000378:metabolism*; D055370:Lung Injury / Q000378:metabolism; D010100:Oxygen / Q000008:administration & dosage* / Q000009:adverse effects; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects / Q000379:methods*
D000305:Adrenal Cortex Hormones; D010100:Oxygen
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