The ventilatory abnormalities and prognostic values of H2 FPEF score in dyspnoeic patients with preserved left ventricle systolic function.

Either obstructive or restrictive ventilation defects prevail in subjects with high H2 FPEF score, indicating chronic obstructive pulmonary disease (COPD) is commonly associated with HFpEF. In addition, H2 FPEF score was correlated with long-term survival in dyspnoeic subjects with or without concomitant diseases of HFpEF and COPD.