A woman found her 48-year-old husband semiconscious on the couch. As she is escorting you to the patient, she tells you that he had an episode of chest pain the day before but refused to go to the hospital. The patient is responsive to pain only and is markedly diaphoretic. His blood pressure is 70/50 mm Hg, pulse is 140 beats/min and thready, and respirations are 28 breaths/min and shallow. The cardiac monitor reveals sinus tachycardia in lead II, and a 12-lead ECG reveals evidence of myocardial injury. You should:

A) start an IV line, administer 5 mg of midazolam, intubate the patient's trachea, ventilate him at a rate of 15 breaths/min, begin transport, and start a dopamine infusion at 5 µg/kg/min en route to the hospital.
B) keep the patient in a supine position, insert a nasal airway, assist his ventilations with a bag-mask device, begin transport, establish vascular access en route, consider a 100- to 200-mL saline bolus, and start an infusion of dopamine.
C) place the patient in a semi-Fowler position to facilitate breathing, administer oxygen via nonrebreathing mask, begin transport, establish vascular access en route, and administer 20 mL/kg fluid boluses to improve his blood pressure.
D) elevate the patient's legs, ventilate him with a bag-mask device, begin transport, establish vascular access en route, administer 6 mg of adenosine to slow his heart rate, and begin an infusion of epinephrine to increase his blood pressure.

Answer: B) keep the patient in a supine position, insert a nasal airway, assist his ventilations with a bag-mask device, begin transport, establish vascular access en route, consider a 100- to 200-mL saline bolus, and start an infusion of dopamine.