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Comparison of Central Blood Pressure Estimated by a Cuff-Based Device With Radial Tonometry
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 2016 American Journal of Hypertension, Ltd.
METHODS: Consecutive CuffCBP (SphygmoCor Xcel) and TonCBP (SphygmoCor 8.1) duplicate recordings were measured in 182 people with treated hypertension (aged 61±7 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 -0.89±3.48mm Hg (intra-class correlation (ICC) 0.977; 95% confidence interval (CI) 0.973-0.982), -0.50±1.54mm Hg (ICC 0.992, 95% CI 0.987-0.993), and -0.42±3.57mm 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) (-0.91±5.31mm Hg; ICC 0.802; 95% CI 0.756-0.839, -0.99±10.91%; 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 (8.58±19.06mm 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 Type:||Refereed Article|
|Keywords:||arterial blood pressure, blood pressure, blood pressure determination, diagnostic equipment, hemodynamics, hypertension, oscillometry, pulse wave analysis|
|Research Division:||Biomedical and Clinical Sciences|
|Research Group:||Cardiovascular medicine and haematology|
|Research Field:||Cardiology (incl. cardiovascular diseases)|
|Objective Group:||Clinical health|
|Objective Field:||Clinical health not elsewhere classified|
|UTAS Author:||Peng, X (Miss Xiaoqing Peng)|
|UTAS Author:||Schultz, MG (Dr Martin Schultz)|
|UTAS Author:||Sharman, JE (Professor James Sharman)|
|Web of Science® Times Cited:||21|
|Deposited By:||Menzies Institute for Medical Research|
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