title: Correlation between nasal resistance and different acoustic rhinometry parameters in children and adolescents with and without allergic rhinitis.
abstract: Acoustic rhinometry and rhinomanometry are important tests used to assess nasal function. The degree to which the parameters of these tests are correlated is yet to be established.
  
  
  OBJECTIVE
  This paper aimed to study the correlations between nasal resistance (NR) and acoustic rhinometry parameters in children and adolescents with allergic rhinitis and controls.
  
  
  METHODS
  Twenty patients with allergic rhinitis and 20 controls were enrolled. NR, volumes (V4, V5, V2-5), and minimal cross-sectional areas (MC1, MC2) were measured in three moments: baseline, after induction of nasal obstruction and after topical decongestant administration.
  
  
  RESULTS
  Patients with allergic rhinitis had significant correlation between NR and all volumes (V5: r = -0.60) and with MC2. Among controls, MC1 was the parameter with the strongest correlation with NR at baseline (r = -0.53) and after decongestant administration. In the combined analysis, V5 had the highest correlation coefficients at baseline (r = -0.53), after obstruction (r = -0.58) and after decongestant (r = -0.46).
  
  
  CONCLUSIONS
  Our data showed that NR and acoustic rhinometry parameters have negative and significant correlations. Nasal volumes are, in general, better correlated than minimal cross-sectional areas. V5 was the parameter with the highest correlation in the rhinitis group and in the combined analysis.
authors.affiliation: Allergy, Clinical Immunology and Rheumatology Program, Department of Pediatrics, Federal University of São Paulo, Rua dos Otonis no. 725, Vila Clementino, São Paulo.
authors.forename: Gustavo Falbo
authors.initials: GF
authors.lastname: Wandalsen
authors.forename: Aline Inês
authors.initials: AI
authors.lastname: Mendes
authors.forename: Dirceu
authors.initials: D
authors.lastname: Solé
mesh_terms: D000293:Adolescent; D000403:Airway Resistance / Q000502:physiology*; D016022:Case-Control Studies; D002648:Child; D006801:Humans; D009296:Nasal Cavity / Q000503:physiopathology*; D014663:Nasal Decongestants / Q000008:administration & dosage; D015508:Nasal Obstruction / Q000188:drug therapy / Q000503:physiopathology*; D010109:Oxymetazoline / Q000008:administration & dosage; D065631:Rhinitis, Allergic; D012221:Rhinitis, Allergic, Perennial / Q000503:physiopathology*; D025363:Rhinomanometry; D023842:Rhinometry, Acoustic
chemical_list: D014663:Nasal Decongestants; D010109:Oxymetazoline