Accuracy of impedance cardiography for evaluating trends in cardiac output: a comparison with oesophageal Doppler E. Lorne, Y. Mahjoub, M. Diouf, J.

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Presentation transcript:

Accuracy of impedance cardiography for evaluating trends in cardiac output: a comparison with oesophageal Doppler E. Lorne, Y. Mahjoub, M. Diouf, J. Sleghem, C. Buchalet, P.-G. Guinot, S. Petiot, A. Kessavane, B. Dehedin, H. Dupont British Journal of Anaesthesia Volume 113, Issue 4, Pages 596-602 (October 2014) DOI: 10.1093/bja/aeu136 Copyright © 2014 The Author(s) Terms and Conditions

Fig 1 (a) Pearson coefficient for the correlation between COODM and COICG (n=130, r=0.84, P<0.001). (b) A Bland–Altman plot (mean bias: 0.10 litre min−1; limits of agreements: −1.90 and 2.11 litre min−1). The percentage error was 41%.27 British Journal of Anaesthesia 2014 113, 596-602DOI: (10.1093/bja/aeu136) Copyright © 2014 The Author(s) Terms and Conditions

Fig 2 Pearson coefficient for the correlation between ΔCOODM and ΔCOICG [n=93, r=0.88 (0.82−0.94), P<0.0001] and a four-quadrant analysis with exclusion of central zone data (<0.5 litre min−1). Good trending ability was observed in the four-quadrant plot analysis (n=93, 95% CI 0.86; 1.00). British Journal of Anaesthesia 2014 113, 596-602DOI: (10.1093/bja/aeu136) Copyright © 2014 The Author(s) Terms and Conditions

Fig 3 Polar plot for ΔCO values as a function of the number of ΔCO measurements per subject (1, 2 or 3). After exclusion of CO variations <0.5 litre min−1, the angular bias was −7.2° (−12.3°; −2.5°) and the RLA were −38° and 24°. Measurements were recorded for n=22 subjects (ΔCO >0.5 litre min−1). British Journal of Anaesthesia 2014 113, 596-602DOI: (10.1093/bja/aeu136) Copyright © 2014 The Author(s) Terms and Conditions

Fig 4 Inclusion rate as a function of the radial sector size. The 95% inclusion rate was obtained for a radial sector of 32°, which corresponds to moderate to good trending.25 British Journal of Anaesthesia 2014 113, 596-602DOI: (10.1093/bja/aeu136) Copyright © 2014 The Author(s) Terms and Conditions