Fig. 2.
(A) Mean pulmonary arterial pressure (PAP), (B) pulmonary vascular resistance index (PVRI), (C) plasma hemoglobin (Hb) levels, and (D) plasma NO consumption before, during, and after transfusion of fresh (FRBC) and stored (SRBC) erythrocyte units after exposure to 300 ppm NO in 90% nitrogen (N2)/10% O2 or to 90% N2/10% O2 (without NO) using a gas exchanger. *P < 0.01 values of SRBC + 10% O2 differ from FRBC + 10% O2, FRBC + NO, and SRBC + NO. +P < 0.01 values of both SRBC + 10% O2 and SRBC + NO differ from FRBC + 10% O2 and FRBC + NO. Data are presented as mean ± SD throughout.