Pharyngeal mucosal pressures with the laryngeal tube airway versus ProSeal laryngeal mask airway

Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
C KellerAlex Loeckinger

Abstract

We tested the hypothesis that mucosal pressures are higher for the laryngeal tube airway trade mark than the ProSeal laryngeal mask airway. Fifteen fresh cadavers were studied. Microchip pressure sensors were attached to the laryngeal tube airway and ProSeal laryngeal mask airway at four similar anatomical locations (base of tongue, lateral pharynx, posterior pharynx and posterior hypopharynx) and three dissimilar locations (laryngeal tube airway trade mark, anterior and lateral hypopharynx; ProSeal laryngeal mask airway, pyriform fossa). The cuff volume (laryngeal tube airway, < or = 140 ml; ProSeal laryngeal mask airway, < or = 30 ml) was adjusted until the oropharyngeal leak pressure was 15 cm H2O and the mucosal pressures recorded. This was repeated at an oropharyngeal leak pressure of 20, 25 and 30 cm H2O. Mucosal pressures in the lateral pharynx were always similar. Mucosal pressures at the base of tongue and posterior pharynx were similar for the laryngeal tube airway and ProSeal laryngeal mask airway at 15 and 20 cm H2O, but were higher for the laryngeal tube airway at 25 cm H2O at 30 cm H2O. Mucosal pressures in the posterior hypopharynx were always higher for the laryngeal tube airway (all: p < 0.03). Mean mucosal pre...Continue Reading

Citations

Aug 17, 2005·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Tim M CookJerry P Nolan
Aug 22, 2009·Annals of Emergency Medicine·Joshua B GaitherChristopher B Colwell
Aug 27, 2009·European Journal of Anaesthesiology·Achmet AliAysel Altan

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