A 64-year-old man comes to the physician for a follow-up appointment. Vitals are normal. Physical examination shows crackles in both lung fields. There is jugular venous distention and peripheral edema. Current medications are lisinopril, metoprolol, furosemide, and aspirin. Serum creatinine is 1.8 mg/dL. Which of the following is most likely to be seen in this patient?
Baroreceptor-mediated inhibition of ADH release
BUN/Cr >20
FENa >1%
Serum atrial natriuretic peptide reduction
Serum sodium of 146 mEq/L
