If you arrive at the scene with an unconscious patient who has no pulse and you do not have a CPR mask, you should perform CPR anyway, call 911, and sit with the patient. Use a respirator in place of a CPR mask. Wait until someone with a CPR mask arrives.
a) Perform CPR anyway
b) Call 911 and sit with the patient
c) Use a respirator in place of a CPR mask
d) Wait until someone with a CPR mask arrives
