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What we're going to have a look at now is an oropharyngeal, or an OP airway, most commonly used in an unconscious patient when manual methods to open the airway are failing or inadequate. We have a number of sizes, five, four, three, two, one, right down to zero, and double zero if we are needing it. The sizing guide works by placing the end of the airway against the angle of the jaw, and in the horizontal plane, we should be looking at this flange resting on the incisors, and we know that this size is appropriate for this patient.

To insert the airway, we first of all need to tip the patient's head back and invert the airway, so it's facing towards the hard palate of the patient. As we insert the airway, we'll feel some resistance, and it's at that point where we invert and insert the airway, so it rests against the oropharynx, and it sits in the vallecula to keep the tongue off the back of the oropharynx, and to give us an airway. As with any airway, or any device that we use to manage a patient, say, we need to make sure that it is working. So if this patient is breathing, we would expose the chest, look for rising and fall of the chest, and also have a listen to see if air is going in and out.