British Journal of Anaesthesia, 1995, Vol. 74, No. 6 655-660
© 1995 The Board of Management and Trustees of the British Journal of Anaesthesia
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Continuous measurement of cardiac output during aortic cross-clamping by the oesophageal Doppler monitor ODM 1
Department of Anaesthesiology, Medical University of Lübeck Ratzeburger Allce 160, 23538 Lübeck, Germany
Department of Surgery, Medical University of Lübeck Ratzeburger Allce 160, 23538 Lübeck, Germany
Bloomsbury Institute of Intensive Care Medicine, University College London, Medical School Rayne Institute Building, University Street, London WC1E 6JJ
We have compared the Doppler against the thermodilution technique for measurement of cardiac output in six patients during aortic surgery. The correlation coefficient between the two methods was between 0.76 and 0.84 during the different periods of the operation. Using the integral nomo-gram instead of direct calibration, the Doppler system underestimated cardiac output in atherosclerotic patients. However, the Doppler method did register accurately significant changes in cardiac output.
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