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BJA Advance Access published online on February 25, 2009
British Journal of Anaesthesia, doi:10.1093/bja/aep020
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© The Board of Management and Trustees of the British Journal of Anaesthesia 2009. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

Comparison of two versions of the Vigileo-FloTracTM system (1.03 and 1.07) for stroke volume estimation: a multicentre, blinded comparison with oesophageal Doppler measurements

R. Chatti1, S. de Rudniki2, S. Marqué4, A. S. Dumenil3, A. Descorps-Declère3, A. Cariou4, J. Duranteau2, M. Aout5, E. Vicaut5 and B. P. Cholley6,*

1 Département d’Anesthésie-Réanimation, AP-HP, Hôpital Lariboisière, Paris, France
2 Département d’Anesthésie-Réanimation, AP-HP, Hôpital Bicêtre, Université Paris 11, Paris, France
3 Département d’Anesthésie-Réanimation, AP-HP, Hôpital Antoine Béclère, Université Paris 11, Paris, France
4 Service de Réanimation Médicale, AP-HP, Hôpital Cochin, Université Paris Descartes, Paris, France
5 Unité de Recherche Clinique, AP-HP, Hôpital Fernand Widal, Université Paris 7, Paris, France
6 Service d’Anesthésie-Réanimation, AP-HP, Hôpital Européen Georges Pompidou, Faculté de Médecine, Université Paris Descartes, Paris, France

* Corresponding author: Service d’Anesthésie-Réanimation, AP-HP, Hôpital Européen Georges Pompidou, 20 rue Leblanc, 75908 Paris cedex 15, France. E-mail: bernard.cholley{at}egp.aphp.fr

Background: Our aim was to evaluate the validity of stroke volume measurements obtained using the Vigileo-FloTracTM system in comparison with those obtained using oesophageal Doppler considered as a reference.

Methods: Prospective, multicentre study (four university hospitals), in which investigators were blinded to stroke volume values acquired simultaneously with the other technique. Two different versions of the Vigileo software (1.03 and 1.07) were studied and compared over two consecutive periods of time. Forty critically ill patients (three ICUs) and 20 high-risk surgical patients (one operating theatre) were studied over a 6-month period.

Results: Two hundred and forty paired stroke volume values obtained using the second version of the Vigileo (1.07) yielded better correlation and agreement (R=0.48, P<0.001; bias=4 ml, limits of agreement: ±41 ml) than the 207 paired values obtained using version 1.03 (R=0.12, P=0.1; bias=1 ml, limits of agreement: ±75 ml). However, even with the second version, the percentage error in stroke volume measurement was 58%, a value still above the range considered clinically acceptable (30%).

Conclusions: The precision of stroke volume estimation using Vigileo-FloTracTM has improved with the second version of the software (1.07), but remains insufficient to allow the replacement of the reference technique in the population studied.

Keywords: equipment, flowmeters; measurement techniques, flow velocity waveform; monitoring, cardiopulmonary


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