A 59 year old male with congestive heart failure has noted increased dyspnea on exertion. Swan-Ganz catheterization reveals the following (pressures in mmHg):
Right atrium - 22
Right ventricle – 44/20
Pulmonary artery – 49/24
Pulmonary capillary wedge pressure – 23
Cardiac index – 2.6 L/min/BSA2 (normal 2.4-4.4 L/min/BSA2)
Administration of which of the following will likely improve his symptoms?
D. Intravenous fluids