Comparing Invasive and Noninvasive Hypotension Prediction Index Measurements
Author Information
Author(s): Rellum Santino R., Kho Eline, Schenk Jimmy, van der Ster Björn J.P., Vlaar Alexander P.J., Veelo Denise P.
Primary Institution: Amsterdam UMC, University of Amsterdam
Hypothesis
Does the Hypotension Prediction Index (HPI) perform differently when measured invasively versus noninvasively?
Conclusion
Noninvasive HPI is reliably accessible to clinicians during noncardiac surgery, showing comparable accuracy in HPI probabilities and the potential for additional response time.
Supporting Evidence
- Invasive and noninvasive HPI have similar discriminatory ability in predicting hypotension.
- Noninvasive HPI may provide additional intervention time for alerting thresholds above an index of 55.
- Some patients show differences in the number of detected hypotensive events between invasive and noninvasive blood pressures.
Takeaway
Doctors can use a noninvasive method to predict low blood pressure during surgery, and it works just as well as the invasive method.
Methodology
Post hoc analysis of a prospective observational study comparing HPI predictions from invasive and noninvasive blood pressure monitoring.
Potential Biases
Potential misclassification of hypotensive events due to reliance on either invasive or noninvasive measurements.
Limitations
The study may not apply to patients in emergency or postanaesthesia care settings, and specific patient characteristics affecting HPI performance were not identified.
Participant Demographics
Adult noncardiac surgery patients, primarily ASA class II, with 40% female participants.
Statistical Information
P-Value
0.673
Confidence Interval
94.2% (90.5 to 96.8) for invasive and 95.3% (90.4 to 98.2) for noninvasive HPI.
Statistical Significance
p=0.673
Digital Object Identifier (DOI)
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