NPPB and chronic thromboembolic pulmonary hypertension: CTPEH, chronic thromboembolic pulmonary hypertension; BUN, blood urea nitrogen; ALT, alanine aminotransferase; AST, aspartate aminotransferase; GGT, gamma glutamil transferase; LDH, lactate dehydrogenase; WBC, white blood cell; RBC, red blood cell; RDW, red cell distribution width; MPV, mean platelet volume; CK-MB, creatine kinase-myoglobin binding; BNP, brain natriuretic peptide; CRP, C-reactive protein; PE, pulmonary embolism; IQR, inter quartile range; SD, standard deviation