Skip to main content
Fig. 4 | BMC Anesthesiology

Fig. 4

From: Is measurement of central venous pressure required to estimate systemic vascular resistance? A retrospective cohort study

Fig. 4

Four-quadrant plots for SVRa vs test SVRs (SVRf10 and SVRr) in patients undergoing neurosurgery. The horizontal and vertical axes represent changes in (A) SVRa and SVRf10 and (B) SVRa and SVRr over one unit of time (20 s using the FloTrac/EV1000 system). The red square in the center of each four-quadrant plot represents a zone of exclusion in the analysis, predefined as a zone with an absolute change of SVR < 100 dynes/sec/cm− 5. SVRa, actual systemic vascular resistance; SVRf10, SVR derived from a fixed CVP of 10 mmHg; SVRr, SVR derived from a random CVP

Back to article page

BMC Anesthesiology

ISSN: 1471-2253

Contact us