title: [Acute effects of therapeutic 1-MHz ultrasound on nasal unblocking of subjects with chronic rhinosinusitis].
abstract: Low-intensity ultrasound therapy (LIUST) has been described as a plausible treatment for chronic rhinosinusitis (CRS).
  
  
  OBJECTIVE
  To evaluate the short-term effects of continuous 1MHz LIUST on nasal obstruction in subjects with CRS.
  
  
  METHODS
  A cohort placebo-controlled study comprising 26 CRS adults (10 men, 16 women), sequentially allocated into two groups: control-placebo (CP, n= 12) and treated with LIUST (US, n = 14). The treatment consisted of: ISATA = continuous 1MHz, 1W.cm-2 for four minutes in the maxillary sinuses and nasal septum. The equipment was switched off in the CP group. The degree of obstruction was assessed by the total volume of secretion expelled (VSEx) after nasal instillation of 5 mL saline solution (NaCl-0.9%) followed by nasal lavage. The volume of expired air (VEA) was assessed with a Glatzel mirror.
  
  
  RESULTS
  The data showed an increase (p < 0.01) in VSEx and VEA after ultrasound therapy, suggesting a 64% improvement of nasal obstruction compared with the CP group.
  
  
  CONCLUSIONS
  Continuous LIUST reduced nasal obstruction and congestionç it may be used effectively in the respiratory therapy of CRS patients.
authors.affiliation: Ciências Fisiológicas pela Universidade Federal do Espírito Santo - UFES, Brasil.
authors.forename: Wanize Almeida
authors.initials: WA
authors.lastname: Rocha
authors.forename: Kátia Maria Gianezeli
authors.initials: KM
authors.lastname: Rodrigues
authors.forename: Rowdley Robert Rossi
authors.initials: RR
authors.lastname: Pereira
authors.forename: Breno Valentim
authors.initials: BV
authors.lastname: Nogueira
authors.forename: Washington Luiz Silva
authors.initials: WL
authors.lastname: Gonçalves
mesh_terms: D000293:Adolescent; D000328:Adult; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015508:Nasal Obstruction / Q000209:etiology / Q000628:therapy*; D012220:Rhinitis / Q000150:complications / Q000628:therapy*; D012720:Severity of Illness Index; D012852:Sinusitis / Q000150:complications / Q000628:therapy*; D016896:Treatment Outcome; D014464:Ultrasonic Therapy / Q000379:methods*; D055815:Young Adult