title: Effect of cricoid pressure on placement of the I-gel™ : a randomised study.
abstract: We studied 40 adult patients to see if cricoid pressure affected placement of the I-gel(™). In a randomised crossover design, the i-gel was placed with and without cricoid pressure, and we compared the success rate of adequate ventilation through the i-gel, time to placement and the rate of optimal position of the device between the two circumstances. Cricoid pressure significantly decreased the success rate of adequate ventilation through the i-gel (40 vs 34 patients) (p = 0.041, 95% CI for difference 4-26%), and significantly decreased the rate of the optimal position (39 vs 17 patients) (p < 0.001). The time to achieve adequate ventilation was significantly longer (p < 0.001) with cricoid pressure than without (median difference 8 s; 95% CI for median difference 3-12 s). Cricoid pressure significantly decreases the success rate of ventilation through the i-gel, but the success rate of ventilation through the i-gel is reasonably high.
authors.affiliation: Dokkyo Medical University Koshigaya Hospital, Koshigaya, Saitama, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hashimoto
authors.forename: T
authors.initials: T
authors.lastname: Asai
authors.forename: T
authors.initials: T
authors.lastname: Arai
authors.forename: Y
authors.initials: Y
authors.lastname: Okuda
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003413:Cricoid Cartilage / Q000502:physiology*; D018592:Cross-Over Studies; D020724:Elastomers; D005260:Female; D006801:Humans; D017214:Laryngeal Masks; D008297:Male; D008875:Middle Aged; D011312:Pressure
chemical_list: D020724:Elastomers