![]() ![]() In the noninvasive study, Vicorder cSBP correlated well with SphygmoCor cSBP when SphygmoCor waveforms were calibrated to brachial MAP/DBP (121 ± 16 versus 121 ± 17 mmHg, P = 0.2) but not when brachial SBP/DBP was used for calibration (115 ± 19 mmHg, P < 0.001). Conversely, cSBP was more closely estimated by SphygmoCor when waveforms were calibrated to brachial MAP/DBP (Δ −2.8 ± 9.4 mmHg, P = 0.04 versus invasive). When oscillometric brachial SBP/DBP was used for peripheral waveform calibration, cSBP was underestimated by Vicorder (Δ −6.4 ± 7.4 mmHg, P < 0.001 versus invasive) and more so by SphygmoCor (Δ −11.9 ± 7.2 mmHg, P < 0.001 versus invasive). Results:Ĭentral SBP (cSBP) obtained with each device satisfied the American Association for the Advancement of Medical Instrumentation accuracy criteria when peripheral waveforms were calibrated to invasive mean arterial pressure (MAP)/DBP: estimated − invasive cSBP difference, −4.0 ± 7.4 mmHg, Vicorder, P < 0.001 −1.4 ± 7.9 mmHg, SphygmoCor, P = 0.21. The two devices were also compared noninvasively in a separate group of 90 healthy individuals. Methods:ĭuring cardiac angiography, cBP estimated by the Vicorder and the SphygmoCor was evaluated against simultaneous invasive cBP in 50 patients. The aim of this study was to evaluate cBP estimated by the Vicorder. The Vicorder is a new brachial cuff-based device that estimates central blood pressure (cBP) using a brachial-to-aortic transfer function. Tel: +39 07 4420 5201 fax: +39 07 4420 5201 e-mail: Ībbreviations: AAMI, American Association for the Advancement of Medical Instrumentation bBP, brachial blood pressure bDBP, brachial DBP bMAP, brachial mean arterial pressure BP, blood pressure bPP, brachial pulse pressure bSBP, brachial SBP cBP, central blood pressure cDBP, central DBP cMAP, central mean arterial pressure cPP, central pulse pressure cSBP, central SBP MAP, mean arterial pressure PP, pulse pressure Maria’ Hospital, Viale Tristano di Joannuccio, 1 05100 Terni, Italy. ![]() *Giacomo Pucci and Joseph Cheriyan contributed equally to the writing of this article.Ĭorrespondence to Giacomo Pucci, Unit of Internal Medicine, University of Perugia at Terni, ‘S. ![]() Maria’ Hospital, Terni, ItalyĬDepartment of Cardiology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK AClinical Pharmacology Unit, University of Cambridge & Cambridge University Hospitals NHS Foundation Trust, Cambridge, UKīUnit of Internal Medicine, University of Perugia at Terni & ‘S. ![]()
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