NPPB and pulmonary embolism: CTA = computed tomography pulmonary angiography; LDH = lactate dehydrogenase; CRP = c-reactive protein; WBC = white blood cell; BNP = B-type natriuretic peptide; IL-6 = interleukin-6; PESI = pulmonary embolism severity index; SBP = systolic blood pressure; DBP = diastolic blood pressure