The patient is a 67 year old male who presents complaining of lightheadedness of two hours duration. His wife states that he lost consciousness for about 30 seconds. He denies having any chest pain. His past medical history is significant for mild hypertension and diet-controlled diabetes. His only medication is hydrochlorothiazide. He is pale and diaphoretic on initial examination. His vital signs are below. The remainder of his exam is unremarkable except for mild jugulovenous distention and slight crackles at both lung bases. What would you like to do for this man?