Key result
In adults having major abdominal surgery, the mobile application PWAsnap showed moderate diagnostic agreement with invasive pulse wave analysis for pulse pressure variation (kappa 0.45) and poor agreement for cardiac output (percentage error 48.7%).
Why the study?
Pulse pressure variation and cardiac output can guide perioperative fluid management, but the measurement performance of a mobile application for snapshot pulse wave analysis needed evaluation in adults having major abdominal surgery.
Does a mobile application for snapshot pulse wave analysis accurately estimate pulse pressure variation and cardiac output compared to invasive pulse wave analysis in adults having major abdominal surgery?
Population
38 adults having major abdominal surgery
Comparison
Mobile application snapshot pulse wave analysis vs invasive pulse wave analysis
Design
Prospective study
Authors
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Insufficient agreement precludes routine clinical use of PWAsnap; leaves open validation after technical refinement in prospective studies.
Observational (n=38)
No
Does a mobile application for snapshot pulse wave analysis accurately estimate pulse pressure variation and cardiac output compared to invasive pulse wave analysis in adults having major abdominal surgery?
Effect estimate: Cohen's kappa 0.45
The PWAsnap mobile application showed moderate agreement for pulse pressure variation and poor agreement for cardiac output compared to invasive monitoring, indicating it is not yet ready for routine clinical use.
Hoppe et al. (2020) conducted an observational in Major abdominal surgery (n=38). Mobile application for snapshot pulse wave analysis (PWAsnap) vs. Invasive internally calibrated pulse wave analysis (ProAQT) was evaluated on Diagnostic agreement of pulse pressure variation (PPV) across three predefined categories (Cohen's kappa 0.45). In adults having major abdominal surgery, the mobile application PWAsnap showed moderate diagnostic agreement with invasive pulse wave analysis for pulse pressure variation (kappa 0.45) and poor agreement for cardiac output (percentage error 48.7%).
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