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Accuracy Assessment of a Noninvasive Device for Monitoring Beat-by-Beat Blood Pressure in the Radial Artery Using the Volume-Compensation Method

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4 Author(s)
Tanaka, S. ; Kanazawa Univ., Kanazawa ; Nogawa, M. ; Yamakoshi, T. ; Yamakoshi, K.

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 plusmn 2.1 mmHg and 0.6 plusmn 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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Biomedical Engineering, IEEE Transactions on  (Volume:54 ,  Issue: 10 )