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Fig. 2 | Intensive Care Medicine Experimental

Fig. 2

From: Diagnostic characteristics of 11 formulae for calculating corrected flow time as measured by a wearable Doppler patch

Fig. 2

Diagnostic characteristics of 2 commonly encountered Ftc equations. All 100 preload changes are plotted in all graphs. a Represents the change in Wodey’s formula with the four-quadrant plot on the left and sensitivity-specificity analysis on right. A 2% cut-off provides the best discrimination. b The same data for Bazett’s formula; open orange points represent discordant data on the four-quadrant plot. A 3% threshold is the optimal discrimination for detecting 10% change in SV. SV is stroke volume; delta is change

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