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Comparison of Central Blood Pressure Estimated by a Cuff-Based Device With Radial Tonometry

Citation

Peng, X and Schultz, MG and Abhayaratna, WP and Stowasser, M and Sharman, JE, Comparison of Central Blood Pressure Estimated by a Cuff-Based Device With Radial Tonometry, American Journal of Hypertension, 29, (10) pp. 1173-1178. ISSN 0895-7061 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 American Journal of Hypertension, Ltd.

DOI: doi:10.1093/ajh/hpw063

Abstract

BACKGROUND: New techniques that measure central blood pressure (BP) using an upper arm cuff-based approach require performance assessment. The aim of this study was to compare a cuff-based device (CuffCBP) to estimate central BP indices (systolic BP (SBP), diastolic BP (DBP), pulse pressure (PP), augmentation pressure (AP), augmentation index (AIx)) with noninvasive radial tonometry (TonCBP).

METHODS: Consecutive CuffCBP (SphygmoCor Xcel) and TonCBP (SphygmoCor 8.1) duplicate recordings were measured in 182 people with treated hypertension (aged 617 years, 48% male). Agreement between methods was assessed using standard calibration with brachial SBP and DBP (measured with the Xcel device), as well as with brachial mean arterial pressure (MAP; 40% form factor method) and DBP.

RESULTS: The mean difference SD for central SBP (cSBP), central DBP (cDBP), and central PP (cPP) between methods were -0.893.48mm Hg (intra-class correlation (ICC) 0.977; 95% confidence interval (CI) 0.973-0.982), -0.501.54mm Hg (ICC 0.992, 95% CI 0.987-0.993), and -0.423.57mm Hg (ICC 0.966, 95% CI 0.958-0.972), indicating good agreement. Wider limits of agreement were observed for central AP (cAP) and central AIx (cAIx) (-0.915.31mm Hg; ICC 0.802; 95% CI 0.756-0.839, -0.9910.91%; ICC 0.749; 95% CI 0.691-0.796). Re-calibration with brachial MAP and DBP resulted in an overestimation of cSBP with CuffCBP compared with TonCBP (8.5819.06mm Hg, ICC 0.164, 95% CI -0.029 to 0.321).

CONCLUSION:. cSBP, cDBP, and cPP derived from CuffCBP are substantially equivalent to TonCBP, although the level of agreement is dependent on calibration method. Further validity testing of CuffCBP by comparison with invasively measured central BP will be required.

Item Details

Item Type:Refereed Article
Keywords:arterial blood pressure, blood pressure, blood pressure determination, diagnostic equipment, hemodynamics, hypertension, oscillometry, pulse wave analysis
Research Division:Medical and Health Sciences
Research Group:Cardiorespiratory Medicine and Haematology
Research Field:Cardiology (incl. Cardiovascular Diseases)
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Cardiovascular System and Diseases
Author:Peng, X (Miss Xiaoqing Peng)
Author:Schultz, MG (Dr Martin Schultz)
Author:Sharman, JE (Professor James Sharman)
ID Code:109518
Year Published:2016
Web of Science® Times Cited:1
Deposited By:Menzies Institute for Medical Research
Deposited On:2016-06-21
Last Modified:2017-02-15
Downloads:0

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