QUESTION: A 34-year-old man presents to the ED with acute onset of chest palpitations. He is placed on the cardiac monitor and you note a supraventricular tachycardia with a rate of 185 beats per minute. The patient is hemodynamically stable. He states that this happened in the past and the doctors gave him a drug through the IV that made him feel horrible, but it treated his condition. In the presence of the medications listed below, which one will require you to increase the dose of adenosine used in this patient?