Open AccessA chin-lift mask produces a patent airway more effectively than an oropharyngeal airway using the EC-clamp technique in obese patients
Author(s) -
Li Li,
Jie Feng,
Shu Xie,
Li Cheng Geng
Publication year - 2014
Publication title -
journal of international medical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 57
eISSN - 1473-2300
pISSN - 0300-0605
DOI - 10.1177/0300060514522204
Subject(s) - medicine , chin , clamp , anesthesia , airway , tidal volume , laryngeal mask airway , ventilation (architecture) , surgery , respiratory system , anatomy , mechanical engineering , clamping , engineering
Objective To evaluate the efficiency of ventilation using a novel chin-lift mask compared with an oropharyngeal airway (OPA) with EC-clamp technique in obese patients.Methods Obese patients scheduled for cholecystectomy under general anaesthesia were divided into two groups: the OPA group, in which a standard mask and OPA with the EC-clamp technique were used; the CL group, in which the chin-lift mask was used. Respiratory data were compared.Results One hundred patients were recruited and assigned to the OPA ( n = 50) and CL ( n = 50) groups. Compared with the OPA group, expired tidal volume, peripheral oxygen saturation ( S p O 2 ), tidal volume/peak inspiratory pressure ratio and end-tidal carbon dioxide were higher, and the peak and mean inspiratory pressures were lower, in the CL group. In the CL group, no patient had an S p O 2 ≤95% and the lowest S p O 2 was 99%, whereas in the OPA group, 23 patients had an S p O 2 ≤95% and the lowest S p O 2 was 92%. Difficult mask ventilation occurred in eight patients in the OPA group but in none in the CL group.Conclusion The chin-lift mask provided a patent airway and better quality mask ventilation than an OPA with EC-clamp technique in obese patients.