Predictors of difficult mask ventilation

Whenever you are choosing to sedate a patient in an elective or semi elective setting you should always do an airway assessment to determine if they could be difficult to ventilate or intubate. Key factors to consider that can predict difficult mask ventilation (DMV) are neatly summarised by OBESE

Obesity

Beard

Elderly (>55y.o)

Snores

Edentulous

The presence of any factor can increase risk of DMV. However the presence of 2 factors indicated high likelihood of DMV, sensitivity 0.72 specificity 0.73 according to Langeron et al

 

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