Why the study?
Does a noninvasive device based on volume-compensation accurately measure instantaneous radial artery blood pressure compared to direct invasive measurement in healthy subjects?
Does a noninvasive device based on volume-compensation accurately measure instantaneous radial artery blood pressure compared to direct invasive measurement in healthy subjects?
A noninvasive device using the volume-compensation method can measure instantaneous radial artery pressure with high accuracy compared to invasive methods.
Supports device accuracy versus invasive radial BP in healthy subjects; leaves open validation in patients and clinical use.
For the noninvasive and accurate measurement of instantaneous blood pressure (BP) in the radial artery, the performance of a device based on the principle of volume-compensation was assessed by comparison with simultaneous measurement of direct (invasive) radial artery pressure in nine healthy subjects. Bias and precision of systolic BP (SBP) and diastolic BP (DBP) derived from Bland-Altman plots of data from the present system and the direct method averaged -0.5 +/- 2.1 mmHg and 0.6 +/- 1.8 mmHg respectively, over a wide range of SBP and DBP. These results clearly indicate that, using this system, instantaneous radial artery pressure can be measured noninvasively with high accuracy.
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Tanaka et al. (2007) studied this question.
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