critical care medicine
How To Do Bag Valve Mask (BVM) Ventilation
Relevant Anatomy for BVM Ventilation
Aligning the external auditory canal with the sternal notch may help open the upper airway to maximize air exchange and establishes the best position to view the airway if endotracheal intubation becomes necessary. The degree of head elevation that best aligns the ear and sternal notch varies (eg, none in children with a large occiput, a large degree in obese patients). 