Yildiz et al classified the difficulty of performing mask ventilation on a patient based on clinical findings. The authors are from the University of Kocaeli in Turkey.
Classification of mask ventilation:
(1) easy
(2) awkward
(3) difficult
(4) impossible
Parameters:
(1) adequacy of ventilation
(2) response to insertion of an oral airway
(3) response to the jaw thrust maneuver
(4) response to use of an oxygen flush valve
(5) response to 2-handed mask ventilation technique
(6) need for a change in operator
Parameters
Easy
Awkward
Difficult
Impossible
initial ventilation
adequate
inadequate
inadequate
inadequate
oral airway
NA
adequate
inadequate
inadequate
jaw thrust
NA
adequate
inadequate
inadequate
oxygen flush valve
NA
adequate after 1 or 2 times
adequate after 3 or more times
inadequate
2-handed mask ventilation
NA
NA
adequate
inadequate
change in operator
NA
NA
adequate
inadequate
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