An unconscious adult presents following an MVC. There is no…

An unconscious adult presents following an MVC. There is no spontaneous movement, GCS is 3; gag reflex is absent; R 4 and shallow with periods of apnea. There is thin, bloody fluid draining from his nose. An OPA is inserted and ventilations are being assisted manually. Despite this action, the pt’s pulse oximetry is very low and overall condition is rapidly declining. What action should be performed next?