title: Varying patterns of home oxygen use in infants at 23-43 weeks' gestation discharged from United States neonatal intensive care units.
abstract: OBJECTIVE
  To compare proportions of infants at different gestational ages discharged from the neonatal intensive care unit (NICU) on home oxygen, to determine how many were classified with chronic lung disease based on timing of discharge on home oxygen, and to determine the percentage discharged on home oxygen who received mechanical ventilation.
  
  
  METHODS
  We evaluated a retrospective cohort of infants of 23-43 weeks' gestational age discharged from 228 NICUs in 2009, using the Pediatrix Clinical Data Warehouse. Multilevel logistic regression analysis identified predictors of home oxygen use among extremely preterm, early-moderate preterm, late preterm, and term infants. Duration of mechanical ventilation and median length of stay were calculated for infants discharged on home oxygen.
  
  
  RESULTS
  For the 48877 infants studied, the rate of home oxygen use ranged from 28% (722 of 2621) in extremely preterm infants to 0.7% (246 of 34 934) in late preterm and term infants. Extremely preterm infants composed 56% (722 of 1286) of the infants discharged on home oxygen; late preterm and term infants, 19% (246 of 1286). After gestational age, mechanical ventilation was the main predictor of home oxygen use; however, 61% of the late preterm and term infants discharged on home oxygen did not receive ventilation. The median length of hospital stay was 95 days (IQR, 76-114 days) for extremely preterm infants discharged on home oxygen, but only 15 days (IQR, 10-22 days) for late preterm and term ventilated infants discharged on home oxygen.
  
  
  CONCLUSIONS
  Although home oxygen use is uncommon in later-gestation infants, the greater overall numbers of later-gestation infants contribute significantly to the increased need for home oxygen for infants at NICU discharge. Neither respiratory failure nor lengthy hospitalization is a prerequisite for home oxygen use at later gestational age.
authors.affiliation: Medical College of Wisconsin, Milwaukee, WI. Electronic address: jlagatta@mcw.edu.
authors.forename: Joanne M
authors.initials: JM
authors.lastname: Lagatta
authors.forename: Reese H
authors.initials: RH
authors.lastname: Clark
authors.forename: David C
authors.initials: DC
authors.lastname: Brousseau
authors.forename: Raymond G
authors.initials: RG
authors.lastname: Hoffmann
authors.forename: Alan R
authors.initials: AR
authors.lastname: Spitzer
mesh_terms: D002908:Chronic Disease / Q000628:therapy; D005260:Female; D005865:Gestational Age; D006701:Home Nursing; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000628:therapy; D015931:Intensive Care, Neonatal; D007902:Length of Stay; D016015:Logistic Models; D008171:Lung Diseases / Q000628:therapy; D008297:Male; D010100:Oxygen / Q000627:therapeutic use*; D010351:Patient Discharge; D012121:Respiration, Artificial / Q000706:statistics & numerical data; D012189:Retrospective Studies; D012307:Risk Factors; D013997:Time Factors
chemical_list: D010100:Oxygen
keywords: AUC; Area under the curve; BPD; Bronchopulmonary dysplasia; CLD; Chronic lung disease; MAS; Meconium aspiration syndrome; NICU; Neonatal intensive care unit; PPHN; Persistent pulmonary hypertension of the newborn; ROC; Receiver operating characteristic