title: Comparison of Ventilation With One-Handed Mask Seal With an Intraoral Mask Versus Conventional Cuffed Face Mask in a Cadaver Model: A Randomized Crossover Trial.
abstract: We compare received minute volume with an intraoral mask versus conventional cuffed face mask among medics obtaining a 1-handed mask seal on a cadaver model.
  
  
  
  This study comprised a randomized crossover trial of adult US Army combat medic volunteers participating in a cadaver laboratory as part of their training. We randomized participants to obtain a 1-handed mask seal during ventilation of a fresh unembalmed cadaver, first using either an intraoral airway device or conventional cuffed face mask. Participants obtained a 1-handed mask seal while a ventilator delivered 10 standardized 750-mL breaths during 1 minute. After a 5-minute rest period, they repeated the study with the alternative mask. The primary outcome measure was received minute volume as measured by a respirometer.
  
  
  
  Of 27 recruited participants, all completed the study. Median received minute volume was higher with the intraoral mask compared with conventional cuffed mask by 1.7 L (95% confidence interval 1.0 to 1.9 L; P<.001).
  
  
  
  The intraoral mask resulted in greater received minute volume received compared with conventional cuffed face mask during ventilation with a 1-handed mask seal in a cadaver model. The intraoral mask may prove a useful airway adjunct for ventilation.
authors.affiliation: Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Amack
authors.affiliation: Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX.
authors.forename: Gary A
authors.initials: GA
authors.lastname: Barber
authors.affiliation: Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX.
authors.forename: Patrick C
authors.initials: PC
authors.lastname: Ng
authors.affiliation: Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX.
authors.forename: Thomas B
authors.initials: TB
authors.lastname: Smith
authors.affiliation: Department of Emergency Medicine, San Antonio Uniformed Services Health Education Consortium, San Antonio, TX. Electronic address: Michael.D.April@post.harvard.edu.
authors.forename: Michael D
authors.initials: MD
authors.lastname: April
mesh_terms: D002102:Cadaver; D018592:Cross-Over Studies; D006801:Humans; D017214:Laryngeal Masks; D008297:Male; D012121:Respiration, Artificial / Q000295:instrumentation / Q000379:methods*