All of the following substances provide energy except one. Which is the exception?

Which of the following statements about removing a helmet in a prehospital setting is correct?

a. Helmets should be removed only if they are too tight or if spinal immobilization is required. b. It is acceptable to leave a helmet on a patient if the patient has no airway or breathing problems. c. Any patient wearing a helmet should have it removed so that the airway and breathing can be properly assessed. d. Helmets should never be removed, so OEC Technicians must be creative in working around the obstacle of a helmet while providing care.

A 70-year-old woman remains in asystole following 10 minutes of well-coordinated CPR, successful intubation, IV therapy, and three doses of epinephrine. There are no obvious underlying causes that would explain her cardiac arrest. At this point, it would be appropriate to:

A) attempt transcutaneous cardiac pacing. B) defibrillate one time in case she is in V-Fib. C) seriously consider ceasing resuscitative efforts. D) transport at once with CPR continuing en route.