title: [The adequacy of the defining characteristics of the diagnostics "impaired gas exange" and spontaneous ventilation" in asmathic children].
abstract: OBJECTIVE
  To determine the diagnostic accuracy measures of defining characteristics of respiratory nursing diagnoses "impaired gas exchange" and "impaired spontaneous ventilation" in asmathics children in emergency department.
  
  
  METHODS
  Observational, descriptive transversal study developed between April and September 2013 in a hospital in northeastern Brazil with a sample of 205 children. Diagnoses were established by nurses trained experts in this field. Measures of sensitivity, specificity, positive and negative value prediction right positive and negative likelihood ratio and diagnostic odds for the defining characteristics identified were calculated.
  
  
  RESULTS
  28.8% of the evaluated children had "impaired gas exchange". Dyspnea, abnormal breathing, tachycardia and hypoxemia had higher frequencies. Hypoxemia presented as clinical feature high sensitivity and specificity. 5.9% of the evaluated children had "impaired spontaneous ventilation" and their most frequent defining characteristics were dyspnea, increased heart rate and decreased SaO2. The increasing use of accessory muscles to breathe presented the best measures of validity for this diagnosis.
  
  
  CONCLUSIONS
  The hypoxemia and increased use of accessory muscles presented the best measures of the validity respectively to "deterioration in gas exchange" and "impairment of spontaneous ventilation". These characteristics is necessary to provide for adequate definition and use of diagnostics in clinical practice.
authors.affiliation: Departamento de Enfermería, Universidad Federal de Ceará, Fortaleza, CE, Brasil. Electronic address: ociliacarvalho@hotmail.com.
authors.forename: Ocilia Maria Costa
authors.initials: OM
authors.lastname: Carvalho
authors.affiliation: Departamento de Enfermería, Universidad Federal de Ceará, Fortaleza, CE, Brasil.
authors.forename: Viviane Martins
authors.initials: VM
authors.lastname: da Silva
authors.affiliation: Departamento de Enfermería, Universidad Federal de Ceará, Fortaleza, CE, Brasil.
authors.forename: Rafaela Carolini de Oliveira
authors.initials: RC
authors.lastname: Távora
authors.affiliation: Departamento de Enfermería, Universidad Federal de Ceará, Fortaleza, CE, Brasil.
authors.forename: Daniel Bruno Resende
authors.initials: DB
authors.lastname: Chaves
authors.affiliation: Departamento de Enfermería, Universidad Federal de Ceará, Fortaleza, CE, Brasil.
authors.forename: Beatriz Amorim
authors.initials: BA
authors.lastname: Beltrão
authors.affiliation: Departamento de Enfermería, Universidad Federal de Ceará, Fortaleza, CE, Brasil.
authors.forename: Marcos Venícios de Oliveira
authors.initials: MV
authors.lastname: Lopes
mesh_terms: D001249:Asthma / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D004417:Dyspnea / Q000175:diagnosis; D006761:Hospitals; D006801:Humans; D000860:Hypoxia / Q000175:diagnosis; D009733:Nursing Diagnosis; D012120:Respiration Disorders / Q000175:diagnosis*; D013610:Tachycardia / Q000175:diagnosis
keywords: Asma; Asthma; Child; Diagnóstico de Enfermería; Niño; Nursing Diagnosis