Skip to main content
Figure 3 | Critical Care

Figure 3

From: Blood transfusions increase circulating plasma free hemoglobin levels and plasma nitric oxide consumption: a prospective observational pilot study

Figure 3

Post-transfusion plasma haptoglobin, and pre-transfusion haptoglobin impact on post-transfusion free hemoglobin and nitric oxide consumption. (A) Change of plasma haptoglobin in patients receiving 1 (white bars) or 2 (grey bars) packed red blood cell (pRBC) units from levels before blood transfusion (BT) to 15, 30, 60 and 120 minutes and 24 hours after BT. (B) Change of plasma free hemoglobin (fHb) in patients with pre-transfusion haptoglobin plasma concentrations of 1.9 g/l or higher (white bars), between 0.75 and 1.9 g/l (light-grey bars), or 0.75 g/l or lower (dark-grey bars). Significant changes of fHb levels within groups compared with baseline (pre-transfusion) levels: *P < 0.05, **P < 0.01, ***P < 0.001. Statistical differences between groups are indicated with black bars and according P values. NS, nonsignificant.

Back to article page

Critical Care

ISSN: 1364-8535