Lower body impedance for the evaluation of venovenous bypass flow
E Ejlersen, P Sode, C Skak, A Rasmussen, K Espersen, P Kirkegaard, N H Secher – 30 December 2003 – Inferior vena cava (IVC) clamping during liver transplantation causes venous congestion in the splanchnic and IVC beds. A venovenous bypass relieves congestion and improves cardiac output (CO), but the bypass flow required for adequate drainage of the vascular beds is controversial. In this study we evaluated the bypass flow necessary to compensate for the IVC clamping. Lower body impedance (BI) is inversely related to tissue fluid content and was used to reflect congestion.