A 58-year-old man with a history of alcohol use disorder presents with new-onset ascites. Labs show serum albumin 2.1 g/dL, ascitic fluid albumin 0.8 g/dL, total bilirubin 4.2 mg/dL, and INR 1.9. He is started on spironolactone and furosemide. Two weeks later, his ascites is minimally improved and serum sodium is 128 mEq/L. Which of the following is the most appropriate next step?

Remaining questions and full explanations are VIP-exclusive.