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Arterial pressure: agreement between a brachial cuff-based device and radial tonometry
Chloe M Park1, Olga Korolkova, Justin E Davies
1aInternational Centre for Circulatory Health, Imperial College London & Imperial College Healthcare NHS Trust bDepartment of Bioengineering, Imperial College London, London, UK.
Journal of Hypertension
|January 1, 2014
Summary
A new noninvasive cuff-based device accurately estimates central blood pressure (BP), offering a simpler alternative to current methods. This innovation could increase the clinical use of central BP measurements for better cardiovascular risk prediction.
Area of Science:
- Cardiovascular research
- Biomedical engineering
- Clinical diagnostics
Background:
- Aortic (central) blood pressure (BP) measurement is a superior predictor of cardiovascular events compared to brachial BP.
- Current central BP measurement methods are often restricted to research settings due to operator dependency.
Purpose of the Study:
- To evaluate a novel noninvasive cuff-based device for estimating central BP.
- To compare the device's accuracy against radial tonometry and invasive aortic BP measurements.
Main Methods:
- 1107 individuals underwent cuff-based and tonometry-based central BP estimation.
- Reproducibility was assessed in 28 individuals.
- Simultaneous cuff-based and invasive pressure traces were compared in six individuals.
Main Results:
- The cuff-based device demonstrated high reproducibility for central systolic BP.
- Estimates were comparable to tonometry (average difference 3 ± 6 mmHg).
- Cuff-based pressure waveforms closely matched invasive measurements (cross-correlation 0.93).
Conclusions:
- Noninvasive cuff-based devices show potential for simplifying central BP measurement.
- The device maintains fidelity comparable to tonometry.
- This technology could enhance the clinical adoption of central BP estimates.
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