The noninvasive estimation of central aortic blood pressure in patients with aortic stenosis
- 1 December 2008
- journal article
- editorial
- Published by Ovid Technologies (Wolters Kluwer Health) in Journal Of Hypertension
- Vol. 26 (12), 2381-2388
- https://doi.org/10.1097/hjh.0b013e328313919f
Abstract
Objectives To determine the relationship between brachial blood pressure, and transfer function-estimated and invasively measured central aortic pressure in patients with at least moderate symptomatic aortic stenosis. Methods Fourteen patients aged 54–81 years with mean (SD) effective valve area of 0.69 (0.20) cm2, undergoing coronary angiography, had simultaneous peripheral and central aortic blood pressure measurements. Brachial blood pressure was determined by an oscillometric method. Aortic pressure was measured directly using pressure transducer tipped catheters, and estimated indirectly by the application of a transfer function to a radial arterial waveform obtained by tonometry. Results Measured aortic systolic pressure did not differ significantly from brachial pressure [mean difference (SD) 2 (9) mmHg, P = not significant (NS)]. Transfer function estimates of central systolic pressure obtained from the radial waveform calibrated from brachial pressure were less accurate [mean difference −8 (7) mmHg, P = 0.001]. Recalibration of the radial waveforms using the invasive mean and diastolic blood pressure improved the agreement [mean difference −2 (6) mmHg, P = NS] but did not provide a better estimate than brachial blood pressure. The accuracy of noninvasively estimated subendocardial viability ratio was substantially improved by recalibration of radial arterial waveforms using corrected ejection time. Conclusion In patients with aortic stenosis there is clinically acceptable agreement between noninvasive brachial pressure and directly measured central aortic pressure.Keywords
This publication has 31 references indexed in Scilit:
- Respective impacts of aortic stenosis and systemic hypertension on left ventricular hypertrophyJournal of Biomechanics, 2007
- How to assess mean blood pressure properly at the brachial artery levelJournal Of Hypertension, 2007
- Automatic blood pressure monitors A clinical evaluation of five models in adultsAnaesthesia, 2007
- Noninvasive Assessment of Local Pulse PressureHypertension, 2005
- Effect of non-invasive calibration of radial waveforms on error in transfer-function-derived central aortic waveform characteristicsClinical Science, 2004
- Prospective Evaluation of a Method for Estimating Ascending Aortic Pressure From the Radial Artery Pressure WaveformHypertension, 2001
- Direct and indirect blood pressure in normotensive and hypertensive subjectsJournal of Internal Medicine, 1994
- Noninvasive quantification of left ventricular wall stress: Validation of method and application to assessment of chronic pressure overloadThe American Journal of Cardiology, 1980
- Recommendations regarding quantitation in M-mode echocardiography: results of a survey of echocardiographic measurements.Cell Metabolism, 1978
- Influence of ventricular ejection on the relationship between central aortic and brachial pressure pulse in manCardiovascular Research, 1970