title: Role of pneumography and esophageal pH monitoring in the evaluation of infants with apparent life-threatening event: a prospective observational study.
abstract: OBJECTIVE
  To determine if a positive result on pneumography, diagnosis of gastroesophageal reflux disease (GERD), or nontreatment of those diagnosed with GERD with antireflux medications predicts an increased recurrence risk of apparent life-threatening event (ALTE) over the first 4 weeks of follow-up.
  
  
  METHODS
  Secondary analysis of a prospective, observational study of 300 infants diagnosed with ALTE.
  
  
  RESULTS
  The relative risk of recurrent ALTE was 1.26 (95% confidence interval = 0.47-3.38) among infants with an abnormal versus normal result on pneumography, 1.98 (1.02-3.86) among those diagnosed with GERD versus those not, and 0.46 (0.20-1.03) among those with GERD and started on antireflux medications versus those not started on such medications.
  
  
  CONCLUSIONS
  Positive pneumography for apnea or reflux does not predict an increase in recurrence rate of an ALTE. Infants diagnosed with GERD are more likely to have recurrent ALTE; treatment with antireflux medications may reduce this risk.
authors: The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA. mittal@email.chop.edu
authors: Manoj K
authors: MK
authors: Mittal
authors: Keyur
authors: K
authors: Donda
authors: Jill M
authors: JM
authors: Baren
mesh_terms: D001049:Apnea / Q000150:complications / Q000175:diagnosis*; D057768:Brief, Resolved, Unexplained Event / Q000209:etiology* / Q000517:prevention & control; D050782:Esophageal pH Monitoring; D005260:Female; D005500:Follow-Up Studies; D005764:Gastroesophageal Reflux / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D007223:Infant; D008297:Male; D011446:Prospective Studies; D012008:Recurrence; D012129:Respiratory Function Tests / Q000379:methods*; D016896:Treatment Outcome
chemical_list: D006635:Histamine H2 Antagonists