NPPB and hypertensive disorder: LVEF≥45%, stage C HFpEF, hospitalization within 12 months or elevated BNP/NTpro-BNP. Exclusion: uncontrolled HTN, serum potassium > 5.0 mmol/L, creatinine >2.5 mg/dl, or eGFR <30 mL/min per 1.73 m2.