In an emergency, you grab an adult bag valve mask (Bag-Valve-Mask (BVM) Resuscitator) for airway management but hesitate on sizing. Poor bag-valve-mask ventilation follows–a study found 69.3% of patients develop gastric insufflation during prehospital resuscitation. This emergency requires accuracy. The most important factor is matching the mask seal and bag volume to the patient's anatomy, not ag...
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