Less invasive determination of cardiac output from the arterial pressure by aortic diameter-calibrated pulse contour J.B. de Vaal, R.B.P. de Wilde, P.C.M.

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Less invasive determination of cardiac output from the arterial pressure by aortic diameter-calibrated pulse contour J.B. de Vaal, R.B.P. de Wilde, P.C.M. van den Berg, J.J. Schreuder, J.R.C. Jansen British Journal of Anaesthesia Volume 95, Issue 3, Pages 326-331 (September 2005) DOI: 10.1093/bja/aei189 Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

Fig 1 Pressure–area relationship. Pa, arterial pressure; P0, P1, and CSAmax (for details see Methods). Thin line, predicted curve of a 59-yr-old female with a height of 160 cm and a weight of 48 kg. Solid line, corrected relation, scaled from the predicted diameter (20.7 mm) to the measured diameter (16.7 mm) at an arterial pressure of 82 mm Hg. British Journal of Anaesthesia 2005 95, 326-331DOI: (10.1093/bja/aei189) Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

Fig 2 Diagrams showing the data pairs of all 24 patients before (left) and after (right) diameter (diam) calibration. In the scatter diagrams (a and b), the line of identity is given. The dashed lines in the Bland–Altman plots (c and d), indicate bias (−7 and 1%) and limits of agreement (−62 to +50% and −27 to 24%). British Journal of Anaesthesia 2005 95, 326-331DOI: (10.1093/bja/aei189) Copyright © 2005 British Journal of Anaesthesia Terms and Conditions