Comparison of central systolic pressure estimates obtained from ultrasound images and applanation tonometry

19th Argentinean Bioengineering Society Congress

Graf^1,2,3 ; Bortolin, L.^1 ; Pascaner, A.^1 ; Craiem, D.^1,2

Fac. de Ingeniería y Ciencias Exactas y Naturales, Universidad Favaloro, Argentina^1

CONICET, Buenos Aires, Argentina^2

Fac. Regional Buenos Aires, UTN, Argentina^3

关键词: Arterial blood pressure;    Arterial pressures;    Arterial tonometry;    Carotid plaques;    Moving average filter;    Non-invasive assessments;    Systolic pressure;    Ultrasound images;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/477/1/012034/pdf
DOI  :  10.1088/1742-6596/477/1/012034

来源: IOP

【 摘 要 】

Current non invasive assessment methods to estimate central pressure are based on the use of arterial tonometry: directly on the carotid artery or using a mathematical transfer function applied to the radial artery waveform. The first one is not recommended in obese patients or in the presence of carotid plaques, whereas the use of a unique transfer function to different population has been questioned. In this work we evaluated two alternative methods to assess systolic local arterial blood pressure: 1) from the analysis of B-mode carotid diameter waveforms (SBP-Dia) and 2) from the radial artery pressure waveform using an n-point moving average filter (SBP-Rad), and we estimated the accuracy of both when compared to direct carotid tonometry (SBP-Ton). In 20 asymptomatic subjects (49±11 years, range: 38-73; pulse pressure: 53±9 mmHg, range: 36-70), SBP-Ton was 132±13 mmHg (range 115-154) and correlated significantly with SBP-Dia (R=0.96, p