title: Laryngeal mask airway insertion in adults: comparison between fully deflated and partially inflated technique.
abstract: OBJECTIVE
  The laryngeal mask airway (LMA) is a supraglottic airway device designed to seal around the laryngeal inlet. A controlled study was designed to compare the effectiveness and complications in inserting the LMA when the cuff is fully deflated and partially inflated.
  
  
  METHODS
  American Society of Anesthesiologists physical status I or II 172 female patients scheduled for gynecologic procedures were included in this study. Patients were randomly allocated into one of the two groups; fully deflated (n=86) and partially inflated group (n=86). A size #4 LMA was inserted. The number of attempts, time taken for successful insertion, grade of leak, grade of fiberoptic view, and complications were evaluated.
  
  
  RESULTS
  All 172 patients completed the study protocol. The number of attempts, time taken for successful insertion, and grade of leak were not significantly different between the two groups. The grade of fiberoptic view and complications were lower in the fully deflated group.
  
  
  CONCLUSIONS
  The fully deflated method is more accurate and safe because of better fiberoptic view and lesser complications than the partially inflated group.
authors.affiliation: Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea.
authors.forename: Jiwon
authors.initials: J
authors.lastname: An
authors.forename: Seo Kyung
authors.initials: SK
authors.lastname: Shin
authors.forename: Ki Jun
authors.initials: KJ
authors.lastname: Kim
mesh_terms: D000328:Adult; D058109:Airway Management / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D017214:Laryngeal Masks / Q000009:adverse effects*; D008875:Middle Aged
keywords: Complication; laryngeal mask airway
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