Utility of uncalibrated femoral stroke volume variation as a predictor of fluid responsiveness during the anhepatic phase of liver transplantation

Young Hee Shin, Justin Sangwook Ko, Mi Sook Gwak, Gaab Soo Kim, Jong Hwan Lee, Suk-Koo Lee
Liver Transplantation 2011, 17 (1): 53-9
We evaluated the value of the stroke volume variation (SVV) calculated with the Vigileo monitor, which recently has been increasingly advocated for fluid management, as a predictor of fluid responsiveness during the anhepatic phase of liver transplantation (LT). We also compared SVV to the central venous pressure (CVP) and pulmonary arterial occlusion pressure (PAOP) in patients. Thirty-three adult recipients scheduled for elective living donor LT were enrolled in this study. Twenty minutes after the start of the anhepatic phase, the CVP, PAOP, approximate inferior vena caval pressure, femoral SVV, and cardiac output values were measured before and 12 minutes after fluid loading. Fluid loading was performed with a 6% hydroxyethyl starch solution (10 mL/kg). The responders were defined as patients whose cardiac index increased ≥ 15% after fluid loading. Receiver operating characteristic (ROC) analysis showed that only femoral SVV (area under the curve = 0.894, P = 0.0001) could be used to predict fluid responsiveness during the anhepatic phase of LT. The area under the ROC curve for femoral SVV was 0.894 (P = 0.0001), and it was significantly larger than those for CVP (area under the curve = 0.576, P = 0.004) and PAOP (area under the curve = 0.670, P = 0.021). Femoral SVV >8% identified the responders with a sensitivity of 89% and a specificity of 80%. Our results suggest that femoral SVV derived with the Vigileo monitor would be useful for fluid management during the anhepatic phase in LT recipients.

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