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A randomised crossover trial comparing a single‐use polyvinyl chloride laryngeal mask airway with a single‐use silicone laryngeal mask airway
Author(s) -
Bell S. F.,
Morris N. G.,
Rao A.,
Wilkes A. R.,
Goodwin N.
Publication year - 2012
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/anae.12004
Subject(s) - polyvinyl chloride , silicone , medicine , anesthesia , airway , mascara , surgery , laryngeal mask airway , materials science , composite material
Summary We compared insertion rates of single‐use polyvinyl chloride laryngeal mask airways (LMAs) vs single‐use silicone LMAs in 72 anaesthetised patients. Both airways were produced by Flexicare Medical. Laryngeal mask airway insertion was successful on the first attempt in 68/72 (94%) polyvinyl chloride LMAs vs 64/72 (89%) silicone LMAs (p = 0.39). Overall insertion rates were 72/72 (100%) for the polyvinyl chloride LMAs and 71/72 (99%) for the silicone LMAs (p = 1.0). Mean (SD) insertion times were similar for polyvinyl chloride and silicone LMAs: 24.3 (5.1)s vs 24.8 (7.8)s (p = 0.64). Laryngeal mask airway position, as assessed using a fibrescope, was not different (p = 0.077). The median (IQR [range]) leak pressure was 16 (12–20 [6–30]) cmH 2 O for the polyvinyl LMA and 18 (13–22 [6–30]) cmH 2 O or the silicone LMA (p = 0.037). In conclusion, we did not find any important differences between polyvinyl chloride and silicone laryngeal mask airways.