Evaluation of the Vicorder, a novel cuff-based device for the noninvasive estimation of central blood pressure.
Pucci G., Cheriyan J., Hubsch A., Hickson SS., Gajendragadkar PR., Watson T., O'Sullivan M., Woodcock-Smith J., Schillaci G., Wilkinson IB., McEniery CM.
OBJECTIVES: The Vicorder is a new brachial cuff-based device that estimates central blood pressure (cBP) using a brachial-to-aortic transfer function. The aim of this study was to evaluate cBP estimated by the Vicorder. METHODS: During cardiac angiography, cBP estimated by the Vicorder and the SphygmoCor was evaluated against simultaneous invasive cBP in 50 patients. The two devices were also compared noninvasively in a separate group of 90 healthy individuals. RESULTS: Central 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