July 1, 1993Hypertension
Spectral and sequence analysis of finger blood pressure variability. Comparison with analysis of intra-arterial recordings.
Key result
Finger blood pressure analysis using Finapres significantly overestimated low-frequency (+13.7 +/- 4.4 mm Hg2, P<.01) and mid-frequency (+2.3 +/- 0.9 mm Hg2, P<.05) systolic blood pressure powers.
Why the study?
Does the Finapres device accurately measure blood pressure variability compared to intra-arterial recordings in resting patients?
Population
14 patients at rest
Comparison
Finger blood pressure recording using the… vs Simultaneous intra-arterial pressure recordings
Design
Cross-sectional
Follow-up
30 minutes
Authors
Discussion
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Implication
Finapres overestimation of systolic BP variability warrants interpretive caution; leaves open device validation for frequency-domain research.
Study Design
Type
Observational (n=14)
Structured PICO
Does the Finapres device accurately measure blood pressure variability compared to intra-arterial recordings in resting patients?
P
Population
14 patients at rest
I
Intervention
Finger blood pressure recording using the Finapres device
C
Comparator
Simultaneous intra-arterial pressure recordings
O
Outcome
Blood pressure variability (standard deviation and spectral powers of systolic, diastolic, mean arterial pressure, and pulse interval)surrogate
Main Result
p-value: p=<.01
The Finapres device provides accurate estimates of diastolic and mean arterial pressure variability but overestimates systolic blood pressure variability compared to invasive intra-arterial recordings.
Cite This Study
Omboni et al. (1993) reported an observational. Finapres device (finger blood pressure) vs. Intra-arterial recordings was evaluated on Blood pressure variability (standard deviation and spectral powers) (p=<.01). Finger blood pressure analysis using Finapres significantly overestimated low-frequency (+13.7 +/- 4.4 mm Hg2, P<.01) and mid-frequency (+2.3 +/- 0.9 mm Hg2, P<.05) systolic blood pressure powers.