['congestive heart failure', 'heart failure, left-sided', 'left-sided heart failure']
['albuterol']

        Inclusion Criteria:

          -  Heart Failure with Preserved Ejection Fraction (HFpEF)

          -  Normal left ventricular ejection fraction (≥50%)

          -  Elevated Left Ventricular filling pressures at cardiac catheterization (defined as
             resting Pulmonary Capillary Wedge Pressure>15 mmHg and/or ≥25 mmHg during exercise).

        Exclusion Criteria:

          -  Prior albuterol therapy (within previous 48 hours)

          -  Current long acting inhaled beta agonist use

          -  Significant hypokalemia (<3meq/L)

          -  Significant valvular disease (>moderate left-sided regurgitation, >mild stenosis)

          -  High output heart failure

          -  Severe pulmonary disease

          -  Unstable coronary disease

          -  Constrictive pericarditis

          -  Restrictive cardiomyopathy

          -  Hypertrophic cardiomyopathy
      