The problem of the airway is not only the problem of the breathing. It is also including the problem of the healthy style. Establish a patent airway by positioning, suction, or insertion of an artificial nasal or oropharyngeal airway. If the patient is deeply comatose or if there is no gag or cough reflex, perform endotracheal intubation. These airway interventions may not be necessary if the patient is intoxicated by an opioid or a benzodiazepine and responds rapidly to intravenous naloxone or flumazenil.
The action that you need is breathing normally and deeply to get the best quality of the air. The breathing is clinically assess the quality and depth of respiration, and provide assistance if necessary with a bag-valve-mask device or mechanical ventilator. Provide supplemental oxygen. The arterial blood CO2 tension is useful in determining the adequacy of ventilation. It can be useful for your body.
The other thing is circulation. Measure the pulse and blood pressure and estimate tissue perfusion (eg, by measurement of urinary output, skin signs, arterial blood pH). Place the patient on continuous electrocardiographic monitoring. With these two information you can get the point of breathing and then make the sure action to help yourself. ?