Brittain EL, Janz DR, Austin ED, Bastarache JA, Wheeler LA, Ware LB, Hemnes AR. Elevation of plasma cell-free hemoglobin in pulmonary arterial hypertension. Chest. 2014 Dec;146(146). 1478-85. PMID: 24945582 [PubMed] PMCID: PMC4251612
Cell-free hemoglobin (CFH) is a potent nitric oxide scavenger associated with poor outcomes in several diseases. Pulmonary arterial hypertension (PAH) is characterized by reduced nitric oxide availability. We hypothesized that CFH would be elevated in PAH and would associate with hemodynamics and clinical outcomes.