August 1, 1999Clinical Science
Broad-band spectral analysis of 24 h continuous finger blood pressure: comparison with intra-arterial recordings
Why the study?
Does non-invasive finger blood pressure measurement using the Portapres device accurately estimate 24-h blood pressure spectral power compared to intra-arterial recordings in ambulant subjects?
Population
20 ambulant subjects (8 normotensive and 12 hypertensive)
Comparison
Non-invasive 24-h continuous finger blood… vs Invasive 24-h intra-arterial blood pressure…
Design
Cross-sectional
Follow-up
24 hours
Authors
Discussion
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Member takes
Implication
Portapres spectra require cautious interpretation in 24-h BPV assessment; leaves open need for device-specific validation versus intra-arterial standards.
Structured PICO
Does non-invasive finger blood pressure measurement using the Portapres device accurately estimate 24-h blood pressure spectral power compared to intra-arterial recordings in ambulant subjects?
P
Population
20 ambulant subjects (8 normotensive and 12 hypertensive)
I
Intervention
Non-invasive 24-h continuous finger blood pressure measurement using the Portapres device
C
Comparator
Invasive 24-h intra-arterial blood pressure recordings at the brachial artery level
O
Outcome
Spectral characteristics of 24-h blood pressure variability (broad-band spectra from 3x10(-5) to 0.5 Hz)surrogate
Non-invasive Portapres measurements of 24-h blood pressure variability show frequency-dependent discrepancies compared to intra-arterial recordings, requiring careful interpretation of spectral power estimates.
Cite This Study
Castiglioni et al. (1999) studied this question.