Figure 3. VO2-PVA relations in the control volume run (open circles and solid line; VO2= 1.48 x 10 sup -5 PVA + 0.0337, r = 0.974) and the isoflurane volume run (closed circles and dashed line; VO sub 2 = 1.50 x 10 sup -5 PVA + 0.0164, r = 0.977). Isoflurane shifted the volume-loaded VO2-PVA relation downward in a parallel manner.