A 62-year-old male is seen with crushing chest pain, which he describes as being the same kind of pain that he had with a previous heart attack. He has prescribed nitroglycerin but states that he has not taken any. After administering supplemental oxygen, if needed, and contacting medical control, you should:Select one:A. assist him with his nitroglycerin unless his systolic blood pressure is less than 100 mm Hg.B. begin immediate transport and request a rendezvous with a paramedic unit.C. administer up to three doses of nitroglycerin before assessing his blood pressure.D. administer the nitroglycerin unless he has taken Viagra within the past 72 hours.

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