Assessing fluid status with the vascular pedicle width: relationship to IVC diameter, IVC variability and lung comets
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KeywordsChest Radiograph Fluid Balance Classification Rate Correct Classification Multivariate Linear Regression
This study attempts to determine a vascular pedicle width (VPW) cutoff value that identifies a fluid replete state defined as an IVC diameter ≥2 cm and ≤15% respiratory variation.
In a cross-sectional design, consecutive, critically ill patients underwent simultaneous chest radiographs and ultrasounds. The Research Ethics Committee approved the study.
A VPW value of 64 mm accurately identifies a fluid replete state. Increased extravascular lung water, however, was not relatable to the VPW measurements. The VPW can be confidently used to discriminate fluid repletion from fluid responsiveness.
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