NPPB and chronic obstructive pulmonary disease: Patients included in cluster 2 were the youngest (mean age 58.8) and had the highest NTproBNP (7189), bilirubin (1.25), Ast (30), and Alt (34.5), and had the lowest ejection fraction (28%), serum creatinine concentration (1,1) incidence of diabetes (19%), pulmonary congestion (17%), COPD (5.7%), HT (39%), CAD (1.4%) and MI in the past (1.4%).