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How Does the SphygmoCor XCEL Differ from Other PWA/PWV Systems?

Several other devices perform some form of PWA or PWV, including BP+ (USCOM), Mobil-o-Graph (IEM), VICORDER (80beats Medical), Arteriograph (TensioMed), Complior (Alam Medical), PulsePen (DiaTecne), and WatchBP (Microlife). The SphygmoCor XCEL differs in several key ways:

  1. It uses a validated generalized transfer function to reconstruct the central aortic pressure waveform from brachial cuff pulses, rather than estimating or using an alternative surrogate waveform.
  2. Its clinical utility is supported by an extensive, well-established body of scientific literature, making it among the most validated systems in the field.
  3. The PWA performed by the XCEL is more comprehensive than most competing devices, offering a wider range of extractable parameters — all of which have received FDA clearance.
  4. The XCEL produces both a brachial and a central aortic waveform from a single PWA assessment.
  5. The PWV measurement is directly measured, not estimated.
  6. PWV is measured along the aortic segment (carotid to femoral), which more accurately reflects central arterial stiffness and carries stronger associations with cardiovascular outcomes compared to peripheral measurements.