Key result
Non-invasive pleth variability index (PVI) showed a moderately positive correlation with invasive stroke volume variation (SVV) (r = 0.622; P < 0.001) during major abdominal oncosurgery.
Why the study?
Determining intravascular volume status is crucial during major surgery, and it was unclear whether non-invasive pleth variability index could correlate with and replace invasive stroke volume variation during major abdominal oncosurgery.
Does non-invasive PVI correlate with invasive SVV for predicting fluid responsiveness in mechanically ventilated adults undergoing major abdominal oncosurgery?
Population
54 adult patients undergoing major open abdominal oncosurgery
Comparison
SVV using FloTrac system vs PVI using Masimo pulse oximeter
Design
Prospective observational study
Follow-up
Until the procedure was completed
Authors
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PVI may reduce need for invasive monitoring in oncosurgery; leaves open prospective outcome validation before practice change.
Observational (n=54)
Does non-invasive PVI correlate with invasive SVV for predicting fluid responsiveness in mechanically ventilated adults undergoing major abdominal oncosurgery?
Effect estimate: r = 0.622
p-value: p=< 0.001
Non-invasive PVI shows a moderately positive correlation with invasive SVV and may serve as a valid alternative for assessing fluid responsiveness during major abdominal oncosurgery.
Thomas et al. (2025) conducted an observational in Major open abdominal oncosurgery (n=54). Pleth variability index (PVI) vs. Stroke volume variation (SVV) was evaluated on Correlation between SVV and PVI measurements (r = 0.622, p=< 0.001). Non-invasive pleth variability index (PVI) showed a moderately positive correlation with invasive stroke volume variation (SVV) (r = 0.622; P < 0.001) during major abdominal oncosurgery.