title: Comparison of modified chin lift technique with EC technique for mask ventilation in adult apneic patients.
abstract: BACKGROUND
  Mask ventilation (MV) is an essential basic life support skill. We used chin lift maneuver for MV and named as modified chin lift technique (MCL). EC technique is most common technique used for MV.
  
  
  OBJECTIVE
  The aim of this study is to compare the efficacy of both techniques for MV in term of expired tidal volume (TV). Secondarily, we also assessed the effect of experience on the performance of these both techniques.
  
  
  METHODS
  The study area was operation theater of our hospital. This was a prospective, randomized, crossover study.
  
  
  METHODS
  A total 108 adults undergoing elective surgery under general anesthesia were recruited. In all patients, operators (novice/anesthesiologist) randomly performed both techniques either to start with EC or MCL technique. Expired TV was measured for one minute for each technique.
  
  
  METHODS
  Pairedt-test was used to compare TV.
  
  
  CONCLUSIONS
  The mean TV was significantly higher in MCL group than EC group (528.08 [104.96] ml vs. 483.39 [103] ml;P< 0.001). The novice (521.89 [117.9] ml vs. 478.70 [130.29] ml;P< 0.001) as well as anesthesiologists (534.27 [110.85] ml vs. 488.08 [111.6] ml;P< 0.001) was able to generate significantly more TV with MCL technique than EC technique. The TV did not differ significantly between novice and anesthesiologist for EC technique (P= 0.474) or MCL technique (P= 0.187). Novices as well as anesthesiologist felt MCL technique more satisfactory (70%).
  
  
  BACKGROUND
  CTRI/2016/04/006874.
authors.affiliation: Department of Anaesthesia, M. S. Ramaiah Medical College, Bengaluru, Karnataka, India.
authors.forename: Geetha C
authors.initials: GC
authors.lastname: Rajappa
authors.affiliation: Department of Anaesthesia, M. S. Ramaiah Medical College, Bengaluru, Karnataka, India.
authors.forename: Leena Harshad
authors.initials: LH
authors.lastname: Parate
authors.affiliation: Department of Anaesthesia, M. S. Ramaiah Medical College, Bengaluru, Karnataka, India.
authors.forename: C A
authors.initials: CA
authors.lastname: Tejesh
authors.affiliation: Department of Anaesthesia, M. S. Ramaiah Medical College, Bengaluru, Karnataka, India.
authors.forename: P T
authors.initials: PT
authors.lastname: Prathima
keywords: Chin lift maneuver; EC technique; mask ventilation