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. 2014 May 27;18(3):R108. doi: 10.1186/cc13891

Figure 4.

Figure 4

Bland and Altman diagram between variation of cardiac output (A) and variation of velocity time index (B) after 50- or 500-ml volume expansion. ∆CO50, variation of cardiac output after infusion of 50 ml of fluid over 10 seconds. ∆CO500, variation of cardiac output after infusion of 500 ml of fluid over 15 minutes; ∆VTI50, variation of velocity time index after infusion of 50 ml of fluid over 10 seconds. ∆VTI500, variation of velocity time index after infusion of 500 ml of fluid over 15 minutes; CO, cardiac output; VTI, aortic velocity time index.