P2.21 AGREEMENT OF CENTRAL BLOOD PRESSURE MEASURED BY APPLANATION TONOMETRY AND ECHOTRACKING

DOI

10.1016/j.artres.2013.10.082How to use a DOI?

Abstract

Background: Some studies have shown the interest of measuring central blood pressure (CBP). Usually measured non-invasively through a function transfer by applanation tonometry (Sphygmocor^®) CBP can also be calculated by echotracking (Art.Lab^®) at the common carotid artery assuming the fact that the distension waveform is similar to a pressure curve and thus be more precise. However, the agreement between CBP derived from these two devices remains not clear.

Objectives: To analyse the agreement between CBP and study the discrepancies between the two techniques.

Materials and methods: 74 Patients from Pharmacology Department in Paris and from Surgery, Medical, Molecular, and Critical area pathology Department at Pisa university were matched for age, sex and BP. CBP was estimated by the onboard transfer function of the Sphygmocor^® derived from radial measurement. Echotracking measurements were performed on right CCA (ART.LAB) and treated to obtain CBP. Pearson’s correlation and Bland&Altman graph were performed for carotid SBP and PP, and multivariate regressions to found the determinants of discrepancies.

Results: The correlations between the carotid BP were good (SBP: r=0.79; PP: r=.77, p<0.001). We showed a small overestimation (<2 mmHg) of carotid SBP and PP by echotracking compared to applanation tonometry. Major determinants of discrepancies were center effect and age [ß=13.1(1.8), p<0.001; ß=0.1(0.01), p=0.049 respectively] for carotid PP and only center [ß=11.8(2.1), p<0.001] for carotid SBP.

Conclusion: This study shows a good agreement between the two techniques. Discrepancies could be explained by the differences between the two populations, and the Sphygmocor transfer function and calibration.

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TY  - JOUR
AU  - M.A. Alivon
AU  - M.L. Lindner
AU  - H.K. Khettab
AU  - E.B. Bozec
AU  - C.P. Palombo
AU  - S.L. Laurent
AU  - P.B. Boutouyrie
PY  - 2013
DA  - 2013/11/11
TI  - P2.21 AGREEMENT OF CENTRAL BLOOD PRESSURE MEASURED BY APPLANATION TONOMETRY AND ECHOTRACKING
JO  - Artery Research
SP  - 125
EP  - 125
VL  - 7
IS  - 3-4
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2013.10.082
DO  - 10.1016/j.artres.2013.10.082
ID  - Alivon2013
ER  -