Patients were considered RELAX-AHF-type if they met the following criteria : discharge diagnosis of heart failure , systolic blood pressure > 125 mm Hg , dyspnea at rest or with mild exertion , intravenous diuretic use , glomerular filtration rate of 30 to 75 mL/min per 1.73 m ( 2 ) , hemoglobin > 8 g/dL , and no use of intravenous inotropes or vasopressors .