A62-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. administer up to three doses of nitroglycerin before assessing his blood pressure. b. administer the nitroglycerin unless he has taken viagra within the past 72 hours. c. begin immediate transport and request a rendezvous with a paramedic unit. d. assist him with his nitroglycerin unless his systolic blood pressure is less than 100 mm hg