title: Predictors of hospitalization in children with acute asthma.
abstract: OBJECTIVE
  To identify predictors of long duration of bronchodilator therapy in children with acute asthma.
  
  
  METHODS
  An emergency department prospective cohort study of 278 children > or =12 months of age, with clinical and socioeconomic parameters collected at baseline and 4 hours after administration of corticosteroids. Patients were classified into short and long therapy groups, with interval from first albuterol dose to initiation of administration every 4 hours < or =12 or >12 hours, respectively. Predictors significant by univariate analysis were examined by multiple logistic regression.
  
  
  RESULTS
  Five variables were associated with long therapy (n = 85) versus short therapy (n = 193): previous intensive care unit admission (odds ratio [OR] 7.2, 95% CI = 1.85, 27.7); baseline oxygen saturation < or =92% (OR 2.6, 95% CI = 0.89, 7.4), asthma score > or =6/9 (OR 2.9, 95% CI = 1.9, 4.37), oxygen saturation < or =92% (OR 6.6, 95% CI = 1.34, 32.0), and hourly albuterol dosing interval (OR 4.3, 95% CI = 0.82, 22.12) 4 hours after administration of corticosteroids. Probability of long therapy was 91.8% to 99% for > or =3 predictors, but only 40.6% to 61.8% for individual factors.
  
  
  CONCLUSIONS
  A combination of 3 or more factors predicts long bronchodilator therapy and signals the need for hospitalization. Children with only one predictor can be safely treated in the emergency department or observation unit and reevaluated.
authors.affiliation: Division of Emergency Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada.
authors.forename: K A
authors.initials: KA
authors.lastname: Keogh
authors.forename: C
authors.initials: C
authors.lastname: Macarthur
authors.forename: P C
authors.initials: PC
authors.lastname: Parkin
authors.forename: D
authors.initials: D
authors.lastname: Stephens
authors.forename: R
authors.initials: R
authors.lastname: Arseneault
authors.forename: O
authors.initials: O
authors.lastname: Tennis
authors.forename: L
authors.initials: L
authors.lastname: Bacal
authors.forename: S
authors.initials: S
authors.lastname: Schuh
mesh_terms: D000208:Acute Disease; D000420:Albuterol / Q000008:administration & dosage / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D001993:Bronchodilator Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D002675:Child, Preschool; D005260:Female; D005541:Forced Expiratory Volume; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D007223:Infant; D016015:Logistic Models; D008297:Male; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012307:Risk Factors
chemical_list: D001993:Bronchodilator Agents; D000420:Albuterol