Select the one best response.
A 60 year old male patient on aspirin, nitrates, and a beta blocker, being followed for chronic stable angina, presents to the ER with a history of two to three episodes of more severe and long-lasting anginal chest pain each day over the past 3 days. His ECG and cardiac enzymes are normal.
The best course of action of the following is to:
a. Admit the patient and begin intravenous digoxin
b. Admit the patient and begin intravenous heparin
c. Admit the patient and give prophylactic thrombolytic therapy
d. Admit the patient for observation with no change in medication
e. Discharge the patient from the ER with increases in nitrates and beta blockers