Direct estimation of central aortic pressure from measured or quantified mean and diastolic brachial blood pressure: agreement with invasive records

Frontiers in Cardiovascular Medicine

Cardiovascular Medicine

Yanina Zócalo¹  Daniel Bia¹  Alejandro Diaz²  Luis Cinca³  Federico Salazar³  Marcos Gutierrez³  Alvaro Facta³ 

[1] Departamento de Fisiología, Centro Universitario de Investigación, Innovación y Diagnóstico Arterial (CUiiDARTE), Facultad de Medicina, Universidad de la República, Montevideo, Uruguay;Instituto de Investigación en Ciencias de la Salud, UNICEN-CCT CONICET, Tandil, Argentina;Sección Hipertensión Arterial, Departamento de Cardiología, Hospital Privado de Comunidad, Mar del Plata, Argentina;

关键词: aortic pressure;    brachial blood pressure;    catheterism;    invasive records;    non-invasive records;    oscillometry;    physiological measurements;    human physiology;   

DOI  :  10.3389/fcvm.2023.1207069

 received in 2023-04-17, accepted in 2023-07-03,  发布年份 2023

来源: Frontiers

【 摘 要 】

BackgroundRecently it has been proposed a new approach to estimate aortic systolic blood pressure (aoSBP) without the need for specific devices, operator-dependent techniques and/or complex wave propagation models/algorithms. The approach proposes aoSBP can be quantified from brachial diastolic and mean blood pressure (bDBP, bMBP) as: aoSBP = bMBP2/bDBP. It remains to be assessed to what extent the method and/or equation used to obtain the bMBP levels considered in aoSBP calculation may affect the estimated aoSBP, and consequently the agreement with aoSBP invasively recorded.MethodsBrachial and aortic pressure were simultaneously obtained invasively (catheterization) and non-invasively (brachial oscillometry) in 89 subjects. aoSBP was quantified in seven different ways, using measured (oscillometry-derived) and calculated (six equations) mean blood pressure (MBP) levels. The agreement between invasive and estimated aoSBP was analyzed (Concordance correlation coefficient; Bland-Altman Test).ConclusionsThe ability of the equation “aoSBP = MBP2/DBP” to (accurately) estimate (error <5 mmHg) invasive aoSBP depends on the method and equation considered to determine bMBP, and on the aoSBP levels (proportional error). Oscillometric bMBP and/or approaches that consider adjustments for heart rate or a form factor ∼40% (instead of the usual 33%) would be the best way to obtain the bMBP levels to be used to calculate aoSBP.

【 授权许可】

Unknown   
© 2023 Bia, Salazar, Cinca, Gutierrez, Facta, Zócalo and Diaz.