Background: Control of blood loss is a crucial problem during hepatectomy. Bleeding from the inflow system can be controlled by the Pringle maneuver or selective vascular occlusion. Bleeding from the outflow system is closely related to central venous pressure (CVP). Therefore, in this study, we evaluated whether vascular outflow control by clamping the inferior vena cava (IVC) below the liver (IVC clamping) during hepatectomy is a safe and effective method to reduce blood loss and CVP.
Methods: We reviewed the outcomes of 103 consecutive patients whose CVP values were >5 cm H(2)O and who had undergone right or left hemihepatectomy between 1995 and 2000. Forty-seven patients who underwent hepatectomy with IVC clamping (Group A) between 1998 and 2000 were compared with the previous 56 patients who underwent hepatectomy without IVC clamping between 1995 and 1997 (Group B).
Results: The CVP decreased by 3.7 cm H(2)0 after IVC clamping. Estimated blood loss was 910 mL in Group A and 1177 mL in Group B. (P=.008) No severe renal or cardiovascular damage occurred after IVC clamping.
Conclusions: IVC clamping is very effective in reducing blood loss during hepatectomy when the CVP is elevated and cannot be reduced pharmacologically or by fluid restriction.