title: Comparison of haemodynamic responses to orotracheal intubation with GlideScope videolaryngoscope and fibreoptic bronchoscope.
abstract: OBJECTIVE
  The GlideScope videolaryngoscope is a newly developed laryngoscope for tracheal intubation recently introduced into clinical anaesthesia. In this randomised clinical study, we compared the haemodynamic responses to orotracheal intubation using a GlideScope videolaryngoscope and a fibreoptic bronchoscope.
  
  
  METHODS
  Fifty-six adult patients, ASA I-II scheduled for elective plastic surgery under general anaesthesia requiring orotracheal intubation were randomly allocated to either the GlideScope videolaryngoscope group or the fibreoptic bronchoscope group. After a standard intravenous anaesthetic induction, orotracheal intubation was performed. Noninvasive blood pressure and heart rate were recorded before and after induction, at intubation and for 5 min after intubation at 1 min intervals.
  
  
  RESULTS
  As compared with the post-induction values the orotracheal intubations using a fibreoptic bronchoscope and a GlideScope videolaryngoscope resulted in the significant increases in blood pressures which did not exceed their baseline values. In the two groups, heart rates at intubation and within 2 min after intubation were significantly higher than their baseline values. However, there were no significant differences in blood pressures and heart rates at all time points, their maximal values and maximal percent changes during the observation and the times required to reach their maximal values between the two groups.
  
  
  CONCLUSIONS
  The orotracheal intubations using a fibreoptic bronchoscope and a GlideScope videolaryngoscope produce similar haemodynamic responses.
authors.affiliation: Department of Anaesthesiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China. FruitXue@yahoo.com.cn
authors.forename: F S
authors.initials: FS
authors.lastname: Xue
authors.forename: G H
authors.initials: GH
authors.lastname: Zhang
authors.forename: X Y
authors.initials: XY
authors.lastname: Li
authors.forename: H T
authors.initials: HT
authors.lastname: Sun
authors.forename: P
authors.initials: P
authors.lastname: Li
authors.forename: H Y
authors.initials: HY
authors.lastname: Sun
authors.forename: Y C
authors.initials: YC
authors.lastname: Xu
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000768:Anesthesia, General; D001794:Blood Pressure; D020680:Bronchoscopes; D017558:Elective Surgical Procedures; D004867:Equipment Design; D005260:Female; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006339:Heart Rate; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D020704:Laryngoscopes; D008297:Male; D008875:Middle Aged; D013518:Surgery, Plastic; D013997:Time Factors; D014741:Video Recording / Q000295:instrumentation