title: Comparison of TruView EVO2 with Miller laryngoscope in paediatric patients.
abstract: BACKGROUND
  Except for neonates and specific malformations in children, management of the paediatric airway is not a major problem for the anaesthetist. Miller laryngoscope was traditionally used for paediatric intubation. The TruView EVO2 system is a recently introduced device with a unique blade that provides a wide and magnified laryngeal view.
  
  
  OBJECTIVE
  To assess the value of the TruView EVO2 laryngoscope with that of Miller laryngoscope in paediatric patients.
  
  
  METHODS
  Prospective analysis.
  
  
  RESULTS
  Fifty 2-8-year paediatric patients presenting for surgery requiring tracheal intubation were randomly assigned to undergo intubation using a Miller (Group M, n = 25) and TruView EVO2 laryngoscope (Group T, n = 25). Preoperative airway evaluation was performed by using the Mallampati scores. The Intubation Difficulty Scale (IDS), the duration of the tracheal intubation procedure, the rate of successful placement of the endotracheal tube in the trachea, the view of the glottis according to the Cormack and Lehane grading criteria, number of intubation attempts, mean arterial pressure (MAP) and heart rate (HR) before and after intubation, lowest peripheric oxygen saturation during intubation attempts and all complications (minor laseration, dental or other airway trauma) were all recorded.
  
  
  RESULTS
  Preoperative Mallampati scores and the IDS scores were similar between the Miller and TruView EVO2 laryngoscope. The average time for laryngoscopy was 6.36 ± 0.99 s in group M and 13.8 ± 7.99 s in group T (P < 0.001). The TruView EVO2 laryngoscope improved the Cormack and Lehane glottic view compared with the Miller laryngoscope. The HR change (difference before and after) in group M was significantly lower than that in group T (P < 0.001). However, the MAP change was similar between groups. The lowest peripheric oxygen saturation during intubation attempts was different between groups, 99.4 ± 0.57% in group M and 97.6 ± 2.41% in group T (P < 0.001).
  
  
  CONCLUSIONS
  The results suggest that when compared with the Miller laryngoscope, the TruView EVO2 laryngoscope appears to improve the view of the larynx but requires a longer time for tracheal intubation. The IDS scores were similar; thus, the TruView EVO2 laryngoscope can be a good alternative to traditionally used Miller laryngoscope.
authors.affiliation: Department of Anesthesiology, Trakya University Medical Faculty, Edirne, Turkey. mehmetturaninal@yahoo.com
authors.forename: Mehmet Turan
authors.initials: MT
authors.lastname: Inal
authors.forename: Dilek
authors.initials: D
authors.lastname: Memis
authors.forename: Murat
authors.initials: M
authors.lastname: Kargi
authors.forename: Zumral
authors.initials: Z
authors.lastname: Oktay
authors.forename: Necdet
authors.initials: N
authors.lastname: Sut
mesh_terms: D001794:Blood Pressure; D002648:Child; D002675:Child, Preschool; D004867:Equipment Design; D005260:Female; D005931:Glottis; D006339:Heart Rate; D006801:Humans; D007442:Intubation, Intratracheal / Q000379:methods*; D020704:Laryngoscopes; D007828:Laryngoscopy / Q000379:methods*; D007830:Larynx; D008297:Male; D010100:Oxygen / Q000378:metabolism; D011446:Prospective Studies; D013997:Time Factors
chemical_list: D010100:Oxygen