An older adult male is admitted to the emergency department (ED) with chest pain and has an order for nitroglycerin (NTG) sublingual. Which is the priority action for the nurse to take?
A) Place one nitroglycerin (NTG) tablet under the patient's tongue, repeat every 5 minutes x 3
B) Ask the patient if he has taken medication for erectile dysfunction over the past 6 hours
C) Draw blood for a cardiac workup and monitor the patient while waiting for the results
D) Encourage the patient to drink 240 mL with first dose of nitroglycerin (NTG)