title: Variations in peak nasal inspiratory flow among healthy students after using saline solutions.
abstract: BACKGROUND
  Nasal hygiene with saline solutions has been shown to relieve congestion, reduce the thickening of the mucus and keep nasal cavity clean and moist.
  
  
  OBJECTIVE
  Evaluating whether saline solutions improve nasal inspiratory flow among healthy children.
  
  
  METHODS
  Students between 8 and 11 years of age underwent 6 procedures with saline solutions at different concentrations. The peak nasal inspiratory flow was measured before and 30 min after each procedure. Statistical analysis was performed by means of t test, analysis of variance, and Tukey's test, considering p<0.05.
  
  
  RESULTS
  We evaluated 124 children at all stages. There were differences on the way a same concentration was used. There was no difference between 0.9% saline solution and 3% saline solution by using a syringe.
  
  
  CONCLUSIONS
  The 3% saline solution had higher averages of peak nasal inspiratory flow, but it was not significantly higher than the 0.9% saline solution. It is important to offer various options to patients.
authors.affiliation: Department of Pediatrics, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil. Electronic address: joilbrich@fmb.unesp.br.
authors.forename: Jaime
authors.initials: J
authors.lastname: Olbrich Neto
authors.affiliation: Department of Nursing, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil.
authors.forename: Sandra Regina Leite Rosa
authors.initials: SR
authors.lastname: Olbrich
authors.affiliation: Department of Nursing, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil.
authors.forename: Natália Leite Rosa
authors.initials: NL
authors.lastname: Mori
authors.affiliation: Public Health, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil.
authors.forename: Ana Elisa de
authors.initials: AE
authors.lastname: Oliveira
authors.affiliation: Department of Biostatistics, Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, SP, Brazil.
authors.forename: José Eduardo
authors.initials: JE
authors.lastname: Corrente
mesh_terms: D000281:Administration, Intranasal; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009296:Nasal Cavity / Q000187:drug effects / Q000502:physiology; D010366:Peak Expiratory Flow Rate / Q000187:drug effects* / Q000502:physiology*; D025363:Rhinomanometry; D012965:Sodium Chloride / Q000008:administration & dosage*
chemical_list: D012965:Sodium Chloride
keywords: Children; Crianças; Higiene nasal; Nasal hygiene; Peak nasal inspiratory flow; Pico de fluxo inspiratório nasal; Salina; Saline