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Updated: Jun 21, 2026

Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
Published on: November 28, 2018
A comparison of stroke volume variation measured by Vigileo/FloTrac system and aortic Doppler echocardiography
Matthieu Biais1, Karine Nouette-Gaulain, Stéphanie Roullet
1Service d'Anesthésie Réanimation I, Hôpital Pellegrin, Centre Hospitalo-Universitaire de Bordeaux, 33076 Bordeaux Cedex, France. matthieu.biais@chu-bordeaux.f
Background:
The goal of this study was to compare stroke volume variation (SVV) assessed from a peripheral artery with the Vigileo/FloTrac system (SVV-FloTrac) with SVV derived close to the heart by aortic Doppler (SVV-Doppler).
Methods:
Thirty patients undergoing liver transplantation underwent simultaneous SVV-FloTrac and SVV-Doppler measurements before and after intravascular volume expansion.
Results:
SVV-FloTrac and SVV-Doppler comparison before intravascular volume expansion showed a mean bias of 0.7%, and 95% limits of agreement of -4.2% to 5.5%. The areas under the receiver operating characteristic curves generated to discriminate responders and nonresponders to intravascular volume expansion were not different for SVV-FloTrac and SVV-Doppler.
Conclusions:
SVV-FloTrac and SVV-Doppler measurements show acceptable bias and limits of agreement, and similar performance in terms of fluid responsiveness in patients undergoing liver transplantation.
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