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Figure 1 | Critical Care

Figure 1

From: Bench-to-bedside review: Microvascular dysfunction in sepsis –hemodynamics, oxygen transport, and nitric oxide

Figure 1

Schematic representation of global and microvascular oxygen (O2) transport parameters. Arteriolar tone establishes the blood flow into an organ, and capillary resistance and rheology factors determine red blood cell (RBC) distribution (heterogeneity) within the capillary bed. Capillary hemodynamics are quantified as RBC velocity (V), lineal density (LD), and supply rate (SR) or flux. Capillary O2 transport (qO2) is determined by capillary SR, RBC hemoglobin O2 saturation (SO2), and the O2 carrying capacity of the RBC (K).

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