Intervention (High-Dose Spironolactone + Patiromer): Patients will be initiated on spironolactone 100 mg orally once daily along with patiromer 8.4 gm orally (if serum K >4.3 meq/L). The dose of loop diuretic will stay same during rest of the study period. On day 2, the dose of spironolactone will be titrated to 200 mg orally once a day depending on the diuretic response and lab results. Serum potassium will be monitored twice a day. The dose of patiromer will be increased to 16.8 gm in patients with potassium levels exceeding 5.5 meq/L; or it will be held for serum K <4.3 mEq/L. Treatment will continue till patients achieve euvolemia or get discharged. Euvolemia is defined as resolution of symptoms and signs of volume overload.