A 69-year-old woman comes to the physician for a 4-month history of progressive shortness of breath with exertion. Serum calcium is 11 mg/dL. Serum protein electrophoresis shows an IgG kappa light-chain spike. Which of the following is most likely to be seen in this patient?
Decreased endothelin expression
Normal pulmonary capillary wedge pressure
S3 heart sound
S4 heart sound
Tricuspid regurgitation
