The AED has delivered a shock to an elderly male in cardiac arrest. After 2 minutes of CPR, the AED reanalyzes the patient's cardiac rhythm and gives a "no shock advised" message. The patient shows signs of spontaneous movement. You note a weak carotid pulse. Your next action should be to:
a. place in him the recovery position and apply oxygen
b. reassess airway and breathing and treat accordingly
c. transport at once and reanalyze his rhythm en route
d. obtain a blood pressure and apply the pulse ox