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Study flow diagram by pulmonary arterial hypertension (PAH) and primary graft dysfunction (PGD) status after lung transplantation. An mPAP of > 40 mm Hg indicated the presence of PAH; an mPAP of ≤ 40 mm Hg indicated that PAH was not present. BLT = bilateral lung transplantation; IPF = idiopathic pulmonary fibrosis; mPAP = mean pulmonary arterial pressure; SLT = single-lung transplantation.
