Comparison between ultrasonic and thermodilution cardiac output measurements in intensive care patients

Doppler Flow Determination

“…The results reported are generally good or excellent for measurements in the aorta, only slightly worse for those in the mitral valve area and somewhat worse for those in the pulmonary artery. For the present paper, data from 20 studies [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] (special reference list) were considered, which comply with the following requirements: they compare various types of Doppler measurements with invasive results; they report absolute results for flow; and the measurements are made in the aorta. The correlations of Doppler v. invasive methods such as Fick, indicator dilution, electromagnetic flowmetry or volumetric measurements by beaker and stopwatch are summarized in figure 4.…”