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In vivo evaluation of a novel, wrist-mounted arterial pressure sensing device versus the traditional hand-held tonometer.
Journal article

In vivo evaluation of a novel, wrist-mounted arterial pressure sensing device versus the traditional hand-held tonometer.

  • Vardoulis O Microsoft Research, Redmond, WA USA; Laboratory of Hemodynamics and Cardiovascular Technology, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland. Electronic address: orestis@hotmail.ch.
  • Saponas TS Microsoft Research, Redmond, WA USA.
  • Morris D Microsoft Research, Redmond, WA USA. Electronic address: dan@microsoft.com.
  • Villar N Microsoft Research, Redmond, WA USA.
  • Smith G Microsoft Research, Redmond, WA USA.
  • Patel S Microsoft Research, Redmond, WA USA; University of Washington, Seattle, WA USA.
  • Tan D Microsoft Research, Redmond, WA USA.
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  • 2016-07-19
Published in:
  • Medical engineering & physics. - 2016
Arterial stiffness
Arterial tonometry
Pressure sensor
Radial artery
Adolescent
Adult
Aged
Arterial Pressure
Blood Pressure Determination
Hand
Humans
Male
Manometry
Middle Aged
Wrist
Young Adult
English Although hemodynamic parameters can be assessed non-invasively, state-of-the-art non-invasive systems generally require an expert operator and are not applicable for ambulatory measurements. These limitations have restricted our understanding of the continuous behavior of hemodynamic parameters. In this manuscript, we introduce a novel wrist-mounted device that incorporates an array of pressure sensors which can be used to extract arterial waveforms and relevant pulse wave analysis biomarkers. In vivo evaluation is performed with Bland-Altman analysis to compare the novel sensor to a gold-standard hand-held tonometer by assessing their reproducibility and agreement in peripheral augmentation index (AIx) estimation at the radial artery. Arterial waves from 28 randomly selected participants were recorded in a controlled environment. Initially we assess the reproducibility of AIx results for both devices. The intra-class correlation coefficient (ICC) and mean difference ± SD were [0.913, 0.033±0.048] and [0.859, 0.039±0.076] for the hand-held and the wrist-mounted tonometer respectively. We then show that the AIx values derived from the novel tonometer have good agreement, accuracy, and precision when compared against the AIx values derived from the reference hand-held tonometer (ICC 0.927, mean difference 0.026±0.049). In conclusion, we have presented evidence that the new wrist-mounted arterial pressure sensor records arterial waveforms that can be processed to yield AIx values that are in good agreement with its traditional hand-held counterpart.
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.rero.ch/global/documents/97006
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