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Annals of Intensive Care
Fig. 2 | Annals of Intensive Care

Fig. 2

From: Measurement site of inferior vena cava diameter affects the accuracy with which fluid responsiveness can be predicted in spontaneously breathing patients: a post hoc analysis of two prospective cohorts

Fig. 2

Area under the receiver operating characteristic (ROC) curves to predict fluid responsiveness. Area under the ROC curves of the collapsibility index of the inferior vena cava (cIVC) to predict fluid responsiveness depending on the measurement site without (a, cIVC-ns), and with (b, cIVC-st) a standardized breathing manoeuvre. Measurement of inferior vena cava (IVC) diameters was carried out at five sites: at the IVC–right atrium junction (site 0), then at 1 (site 1), 3 (site 3), 4 (site 4) and 5 cm (site 5) caudal to the IVC–atrial junction. For each site where a difference was found between responders and non-responders, the areas under the ROC curves were calculated

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