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

• Published in: British journal of anaesthesia : BJA Vol. 102; no. 4; pp. 463 - 469
• Main Authors: Chatti, R., de Rudniki, S., Marqué, S., Dumenil, A.S., Descorps-Declère, A., Cariou, A., Duranteau, J., Aout, M., Vicaut, E., Cholley, B.P.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.04.2009; Oxford University Press; Oxford Publishing Limited (England)
• Subjects: Adult; Aged; Aged, 80 and over; Anesthesia; Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy; Biological and medical sciences; Blood Flow Velocity; cardiopulmonary; Critical Care - methods; Double-Blind Method; Echocardiography, Transesophageal - methods; equipment, flowmeters; Female; flow velocity waveform; flowmeters; Fluid Therapy; Hemodynamics; Humans; Male; measurement techniques; measurement techniques, flow velocity waveform; Medical sciences; Middle Aged; monitoring; monitoring, cardiopulmonary; Monitoring, Intraoperative - instrumentation; Monitoring, Intraoperative - methods; Monitoring, Physiologic - instrumentation; Monitoring, Physiologic - methods; Prospective Studies; Software; Stroke Volume; Young Adult; measurement techniques, flow velocity waveform; equipment, flowmeters; monitoring, cardiopulmonary; Waveform; Nervous system diseases; Stroke; Estimation; Cardiovascular disease; equipment; Cerebral disorder; Esophagus; Vascular disease; Flowmeter; Measurement technique; Central nervous system disease; Anesthesia; Flow velocity; flow velocity waveform; monitoring; cardiopulmonary; flowmeters; measurement techniques; Cerebrovascular disease; Comparative study; Monitoring
• ISSN: 0007-0912; 1471-6771
• DOI: 10.1093/bja/aep020

Our aim was to evaluate the validity of stroke volume measurements obtained using the Vigileo-FloTrac™ system in comparison with those obtained using oesophageal Doppler considered as a reference. 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. 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%). The precision of stroke volume estimation using Vigileo-FloTrac™ 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.