title: Effect of Ventolin on QTc in children with respiratory distress.
abstract: BACKGROUND
  β2-agonists are first election drugs for the treatment of respiratory disease that may alter cardiac autonomic modulation. The aim of this study was to evaluate the effects of nebulized Ventolin on electrocardiogram, particularly QTc interval to assess the potential arrhythmogenic risks.
  
  
  METHODS
  A total of 192 patients between 2 months and 15 years which received nebulized Ventolin were enrolled in this study. Patients were divided into two groups. Electrocardiograms of patients before and after nebulized Ventolin were taken. Differences between two groups were assessed using a paired student's t test.
  
  
  RESULTS
  There was statistically significant differences in QTc before and after Ventolin in each groups (P<0.005).Ventolin effect on QTc interval in both groups did not differ. In first group, there was statistically significant differences between heart rate before and after Ventolin taken (P=0.009) but in second group there was not statistically significant differences between heart rate (P=0.345).
  
  
  CONCLUSIONS
  Although Ventolin can cause changes in QTc, Ventolin with 0.15 mg/kg/dose in comparison with 0.1 mg/kg/dose does not cause significant changes in QTc.
authors.affiliation: Department of Pediatrics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Khalilian
authors.affiliation: Department of Pediatrics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Fayezi
authors.affiliation: Department of Pediatrics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Alisamir
authors.affiliation: Department of Pediatrics, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Negar
authors.initials: N
authors.lastname: Mohammadi Khorasani
keywords: Children; Electrocardiogram; Ventolin