title: [Clinical characteristics and tilt test of patients with vasovagal syncope suspicion].
abstract: BACKGROUND
  Vasovagal syncope is the most common cause of syncope and is an amount medical, social and economic problem.
  
  
  METHODS
  We study a population of patients with history of syncope of presumed vasovagal origin submitted to head-up tilt test (TT) with intention to describe and to compare symptoms, signs and trigger situations between positive and negative TT. Twenty four variables were investigated (chosen according to the clinical experience).
  
  
  RESULTS
  One hundred thirteen patients were included. The age mean was 33,3 ± 19,4 years and 67.3% corresponded to women. 81 patients (71,7%) experienced syncope during test. The more frequent response was mixed subtype (58 %), followed by vasodepressor response (30,9%) and cardioinhibitory response (11,1%). There were not significant differences between both groups in symptoms, signs and trigger situations. In patients with negative TT was more frequent syncopes triggered by extreme exercise (p = 0,012).
  
  
  CONCLUSIONS
  In patients with vasovagal syncope suspicion, a clinic history does not predict TT results.
authors.affiliation: Servicio de Cardiología, Hospital Privado Centro Médico de Córdoba SA, Naciones Unidas 346. aletreras@hotmail.com
authors.forename: Alejandro E
authors.initials: AE
authors.lastname: Contreras
authors.forename: David A
authors.initials: DA
authors.lastname: Morillo
authors.forename: Eduardo J
authors.initials: EJ
authors.lastname: Brenna
authors.forename: Rodrigo H
authors.initials: RH
authors.lastname: Bagur
authors.forename: Andres A
authors.initials: AA
authors.lastname: Caeiro
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D019462:Syncope, Vasovagal / Q000175:diagnosis* / Q000209:etiology; D018667:Tilt-Table Test