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Optimising the unprotected airway with a prototype Jaw‐Thrust‐Device – a prospective randomised cross‐over study
Author(s) -
Von Goedecke A.,
Mitterschiffthaler L.,
Paal P.,
Mitterlechner T.,
Wenzel V.,
Herff H.
Publication year - 2009
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/j.1365-2044.2009.06059.x
Subject(s) - medicine , airway , anesthesia , ventilation (architecture) , engineering , mechanical engineering
Summary Despite being a standard procedure during induction of anaesthesia, facemask ventilation can be a major challenge especially for inexperienced anaesthetists. We manufactured a Jaw‐Thrust‐Device designed to keep the patient’s jaws in an optimised position, and thus to maintain the airway in a permanently patent state. Using a cross over design, we compared the influence of using the Esmarch manoeuvre (bimanual jaw‐thrust), a nasopharyngeal airway, an oropharyngeal airway, or the Jaw‐Thrust‐Device on airway physiology in 50 healthy adults with body mass index < 35 kg.m −2 , undergoing standard facemask ventilation for routine induction of anaesthesia. The main study endpoints were expiratory tidal volumes, airway resistances, and gas flow rates. The Jaw‐Thrust‐Device was more effective in increasing expiratory tidal volumes and peak inspiratory flow than a standard Esmarch manoeuvre, and was more effective than both nasopharyngeal and oropharyngeal airways in decreasing airway resistance.