Figure 3From: Comparison of superior vena cava and femoroiliac vein pressure according to intra-abdominal pressure Less than 14 mmHg (black circle) FIVP reflected CVP, the linear regression equation was CVP = 1.01 FIVP. Greater than 14 mmHg (white circle), FIVP overestimated CVP. FIVP, femoroiliac venous pressure; CVP, central venous pressure.Back to article page