title: Is it important to repeat the positioning maneuver after the treatment for benign paroxysmal positional vertigo?
abstract: BACKGROUND
  Benign paroxysmal positional vertigo (BPPV) is the most common cause of peripheral vestibular dysfunction.
  
  
  OBJECTIVE
  To assess whether the performance of the Dix-Hallpike maneuver after the Epley positioning maneuver has prognostic value in the evolution of unilateral ductolithiasis of posterior semicircular canal.
  
  
  METHODS
  A prospective cohort study in monitored patients at otoneurology ambulatory with a diagnosis of BPPV; they were submitted to the therapeutic maneuver and then to a retest in order to evaluate the treatment effectiveness; all cases were reassessed one week later and the retest prognostic value was evaluated.
  
  
  RESULTS
  A sample of 64 patients which 47 belonging to negative retest group and 17 belonging to positive retest. Performed the maneuver in all patients, the retest presented 51.85% sensitivity, 91.89% specificity, 82.35% positive predictive value and 72.34% negative predictive value.
  
  
  CONCLUSIONS
  The study shows that doing the retest after repositioning maneuver of particles in BPPV is effectual, since it has high specificity.
authors: Instituto de Assistência Médica ao Servidor Publico Estadual de São Paulo, São Paulo, SP, Brazil. Electronic address: alekolon@yahoo.com.br.
authors: Alexandra Kolontai de Sousa
authors: AK
authors: Oliveira
authors: Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil; Instituto de Assistência Médica ao Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil.
authors: Fabio Akira
authors: FA
authors: Suzuki
authors: Instituto de Assistência Médica ao Servidor Público Estadual de São Paulo, São Paulo, SP, Brazil; Medical Sciences School, Santa Casa de São Paulo, São Paulo, SP, Brazil.
authors: Leticia
authors: L
authors: Boari
mesh_terms: D065635:Benign Paroxysmal Positional Vertigo / Q000175:diagnosis* / Q000628:therapy; D003939:Diagnostic Techniques, Otological; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D056888:Patient Positioning; D026741:Physical Therapy Modalities; D012665:Semicircular Canals / Q000503:physiopathology; D016896:Treatment Outcome
keywords: Canais semicirculares; Resultado de tratamento; Semicircular canals; Treatment outcome; Vertigem; Vertigo
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