Relationship between Radial and Central Arterial Pulse Wave and Evaluation of Central Aortic Pressure Using the Radial Arterial Pulse Wave

Takazawa, Kenji; Kobayashi, Hideyuki; Shindo, Naohisa; Tanaka, Nobuhiro; Yamashina, Akira

doi:10.1291/hypres.30.219

Cited by 235 publications

(213 citation statements)

References 23 publications

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“…17 Therefore, our results support that peripheral SBP2 closely approximates central aortic SBP, [11][12][13][14] and that central SBP may be increased by increased augmentation index, decreased arterial compliance, and increased arterial stiffness. 3,19 In this study, heart rate was not significantly associated with central aortic SBP and did not contribute to the prediction models.…”

Section: Discussionsupporting

confidence: 76%

“…The study confirmed that SBP2 measured from a peripheral pressure wave approximates central aortic SBP, [11][12][13][14] and extended that approximation of brachial SBP2 to aortic SBP can further be improved by the comprehensive analysis of the radial or brachial pressure waves. The study also clearly showed that the major source of errors in the noninvasive estimation of central blood pressure was from the variability of the oscillometric cuff blood pressure measurement, which was particularly prominent after the administration of vasoactive agents.…”

Section: Discussionsupporting

confidence: 68%

“…were also comparable with those of the radial tonometry using a generalized transfer function (mean difference¼À13.3±15.1 mm Hg) 24 or by identifying the radial SBP2 (mean difference¼À11.7 ± 7.1 mm Hg). 14 The large s.d. between the predicted and observed aortic SBP in the present and previous studies were mainly introduced by the large variations between the indirect cuff blood pressure and the direct invasive brachial blood pressure.…”

Section: Discussionmentioning

confidence: 99%

“…9,10 Alternatively, identification of the late systolic shoulder (SBP2) of the calibrated radial pressure wave, firstly proposed by Takazawa et al, 2 can be used directly to approximate central SBP without the need for a generalized transfer function. [11][12][13][14] In either approach, a high-fidelity arterial tonometer is required to obtain faithful recording, in addition to an oscillometric blood pressure monitor. Therefore, we developed and validated a novel method to estimate the central aortic SBP using the oscillometric signals from an oscillometric blood pressure monitor.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of central systolic blood pressure using an oscillometric blood pressure monitor

et al. 2010

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Current noninvasive techniques for assessing central aortic pressure require the recording of an arterial pressure wave using a high-fidelity applanation tonometer. We therefore developed and validated a novel method to estimate the central aortic systolic pressure using an oscillometric blood pressure monitor alone. Invasive high-fidelity right brachial and central aortic pressure waves, and left-brachial pulse volume plethysmography from an oscillometric blood pressure monitor, were obtained at baseline and 3 min after administration of sublingual nitroglycerin in 100 patients during cardiac catheterization. In the initial 50 patients (Generation Group), Central systolic blood pressure was predicted by a multi-variate prediction model generated from the comprehensive analysis of the invasive brachial pressure wave, including brachial late-systolic shoulder pressure value and parameters related to wave reflection and arterial compliance. Another prediction model was similarly constructed from the noninvasively calibrated pulse volume plethysmography. Both models were validated in the subsequent 50 patients (Validation Group) with results: r¼0.98 (Po0.001) and mean difference¼0.5±4.5 (95% confidence interval À8.3 to 9.3) mm Hg for the invasive model, and r¼0.93 (Po0.001) and mean difference¼À0.1 ± 7.6 (95% confidence interval À15.0 to 14.8) mm Hg for the noninvasive model. Thus, our results indicate that central aortic systolic blood pressure could be estimated by analysis of the noninvasive brachial pressure wave alone from an oscillometric blood pressure monitor.

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Section: Discussionsupporting

confidence: 76%

Section: Discussionsupporting

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Estimation of central systolic blood pressure using an oscillometric blood pressure monitor

et al. 2010

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“…8,9 It has also been shown that the second peak of systolic BP (SBP2) of the radial artery is very close to aortic SBP in studies with hypertensive patients, 10 and patients undergoing diagnostic coronary angiography. 11,12 As the reflected wave from the lower body is a major determinant of both later part of aortic SBP and the second peak of SBP in the radial artery, 3 aortic SBP and radial SBP2 may share common features of the reflected waves. However, whether there is close association between aortic SBP and radial SBP2 in a general population needs to be further determined.…”

Section: Introductionmentioning

confidence: 99%

Clinical usefulness of the second peak of radial systolic blood pressure for estimation of aortic systolic blood pressure

et al. 2009

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Central aortic blood pressure (BP), obtained from radial arterial waveform using the transfer function method (TFM), has been shown to have prognostic value independently of brachial BP. In this study, the relationship between peripheral systolic BP (SBP) and aortic SBP was evaluated. We further investigated whether TFMderived aortic SBP can be estimated by information obtained from the radial waveform. The radial waveform was analysed to obtain the first peak of radial SBP (SBP1), second peak of radial SBP (SBP2), radial augmentation index (AI) (radial (SBP2ÀDBP)/(SBP1ÀDBP) Â 100 and aortic SBP and AI using TFM in 233 subjects in the supine position. Measurements were repeated after changing position to the prone position. The constructed equation was validated in 149 community residents with different backgrounds. Radial SBP2 was closer to TFMderived aortic SBP compared with brachial SBP. TFMderived aortic SBP was approximated by the equation: aortic SBP ¼ 18.9-radial SBP2À0.03 Â HR-0.214 Â radial AI (r 2 ¼ 0.992). The equation was also applicable to predicting aortic SBP in the prone position as well as in different populations (mean difference between predicted aortic SBP and TFM-derived aortic SBP: À0.01 ± 1.34 and 1.05 ± 1.47 mm Hg, respectively). Radial arterial waveform analysis can be used for estimation of TFM-derived aortic SBP.

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Soft Wearable Pressure Sensors for Beat‐to‐Beat Blood Pressure Monitoring

Kim

Chou

et al. 2019

Adv Healthcare Materials

178

133

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Wrinkled gold thin films on elastomeric substrates are used as robust parallel plate electrodes for soft capacitive pressure sensors. The wrinkled structures create a robust integration with the polymer, allowing repeated normal force to deform the thin film without failure. By incorporating microridged structures that support the counter electrodes to create air cavities within the elastomeric dielectric layer, pressure sensitivity is further increased to 0.148 kPa−1 over a wide dynamic range of up to 10 kPa. The wide dynamic range and pressure sensitivity of the pressure sensor allow for consistent measurements of the pressure exerted by the radial artery located on the wrist. The soft capacitive pressure sensor displays comparable results when tested against an FDA approved device (Clearsight, Edwards Lifesciences, Irvine, CA) measuring beat‐to‐beat blood pressure. These soft pressure sensors using wrinkled thin films, therefore, illustrate considerable potential to continuously monitor beat‐to‐beat blood pressure.

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Relationship between Radial and Central Arterial Pulse Wave and Evaluation of Central Aortic Pressure Using the Radial Arterial Pulse Wave

Cited by 235 publications

References 23 publications

Estimation of central systolic blood pressure using an oscillometric blood pressure monitor

Estimation of central systolic blood pressure using an oscillometric blood pressure monitor

Clinical usefulness of the second peak of radial systolic blood pressure for estimation of aortic systolic blood pressure

Soft Wearable Pressure Sensors for Beat‐to‐Beat Blood Pressure Monitoring

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