P63 Accuracy (Validation) of Central Blood Pressure Measurement Using the Sphygmocor Xcel-cuff Device

Martin Schultz; Dean Picone; Matthew Armstrong; Andrew Black; Nathan Dwyer; Philip Roberts-Thomson; James Sharman

doi:10.2991/artres.k.191224.094

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Volume 25, Issue Supplement 1, December 2019, Pages S105 - S105

P63 Accuracy (Validation) of Central Blood Pressure Measurement Using the Sphygmocor Xcel-cuff Device

Authors

Martin Schultz¹^{, *}, Dean Picone¹, Matthew Armstrong¹, Andrew Black², Nathan Dwyer², Philip Roberts-Thomson², James Sharman¹

¹Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia

²Royal Hobart Hospital, Hobart, Australia

^*Corresponding author. Email: martin.schultz@utas.edu.au

Corresponding Author

Martin Schultz

Available Online 17 February 2020.

DOI: 10.2991/artres.k.191224.094 How to use a DOI?
Abstract: Background: Numerous devices purport to measure central aortic BP as distinct from conventional brachial BP. This study aimed to determine the accuracy (validation) of the Sphygmocor Xcel-cuff device (AtCor Medical, Sydney, Australia) for measuring central BP.

Methods: 330 patients (mean age 61.3 ± 10.6 years) undergoing coronary angiography had simultaneous measurement of invasive aortic BP and non-invasive cuff-derived central BP using the Xcel device (total n = 552 individual comparisons). Methods were undertaken according to Artery Society guidelines and several calibration techniques to derive central SBP were examined.

Results: Central SBP was significantly underestimated, and with wide variability, when using the default calibration of brachial cuff SBP/DBP (−7.7 ± 11.0 mmHg). Similar wide variability was observed using other calibration methods (cuff 33% form-factor MAP/DBP, −4.4 ± 11.5 mmHg; cuff 40% form-factor MAP/DBP, 4.7 ± 11.9 mmHg; cuff oscillometric MAP/DBP, −18.2 ± 12.1 mmHg). Only calibration with invasive aortic integrated MAP/DBP resulted in a mean difference ± SD (3.3 ± 7.5 mmHg) within the minimum tolerable error of ≤5 ± ≤8 mmHg. The difference between brachial cuff SBP and invasive aortic SBP was 3.3 ± 10.7 mmHg. A subsample (n = 151) analysis to determine the accuracy of central-to-brachial SBP amplification, showed this to be over-estimated by the Xcel device (4.3 ± 9.1 mmHg, p = 0.02).

Conclusion: Irrespective of calibration technique, the Sphygmocor Xcel-cuff device does not pass the Artery Society accuracy (validation) criteria for non-invasive measurement of central BP. Further accuracy refinements of this device are required.
Open Access: This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

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Journal: Artery Research
Volume-Issue: 25 - Supplement 1
Pages: S105 - S105
Publication Date: 2020/02/17
ISSN (Online): 1876-4401
ISSN (Print): 1872-9312
DOI: 10.2991/artres.k.191224.094 How to use a DOI?
Open Access: This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

ris enw bib

TY  - JOUR
AU  - Martin Schultz
AU  - Dean Picone
AU  - Matthew Armstrong
AU  - Andrew Black
AU  - Nathan Dwyer
AU  - Philip Roberts-Thomson
AU  - James Sharman
PY  - 2020
DA  - 2020/02/17
TI  - P63 Accuracy (Validation) of Central Blood Pressure Measurement Using the Sphygmocor Xcel-cuff Device
JO  - Artery Research
SP  - S105
EP  - S105
VL  - 25
IS  - Supplement 1
SN  - 1876-4401
UR  - https://doi.org/10.2991/artres.k.191224.094
DO  - 10.2991/artres.k.191224.094
ID  - Schultz2020
ER  -

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