The Feasibility of Measuring Central Blood Pressure with Bedside Echocardiography: An Observational Cross-Sectional
Mohammed Salah Hussein1, Maged Z Amer1, Mohammed K Kabil1
1Department of Cardiology, Faculty of Medicine, Mansoura University, Egypt (M.S.H., M.Z.A., M.K.K.).
Insights
Central aortic pressure can be non-invasively measured using Doppler echocardiography. This method correlates well with invasive measurements and offers a promising, cost-effective alternative for cardiovascular disease assessment.
Area of Science:
- Cardiovascular Medicine
- Diagnostic Imaging
- Biomedical Engineering
Background:
- Central arterial blood pressure (CBP) is a superior prognostic marker for cardiovascular diseases compared to peripheral blood pressure.
- Invasive central aortic pressure measurement via catheterization carries risks, costs, and time burdens.
Purpose of the Study:
- To evaluate the non-invasive measurement of central aortic pressure using Doppler echocardiography.
- To establish correlations between echocardiographic parameters and invasive central aortic pressure measurements.
Main Methods:
- 118 patients undergoing elective cardiac catheterization had simultaneous transthoracic echocardiography.
- Invasive central aortic pressure was measured concurrently with echocardiographic parameters like aortic deceleration time and Velocity Time Integral (VTI).
Main Results:
- Significant correlations were found between invasive systolic, diastolic, and mean aortic pressure and both aortic deceleration time (P<0.0003) and VTI (P<0.006).
- A reliable equation was developed to calculate mean or diastolic central blood pressure using transthoracic aortic deceleration time.
Conclusions:
- Central aortic pressure can be accurately estimated non-invasively via Doppler echocardiography using parameters like Left ventricular Mass (LVM), aortic deceleration time, and VTI.
- This non-invasive technique offers a promising, potentially more accessible, and cost-effective approach for cardiovascular assessment.
Rationale And Objectives:
Central arterial blood pressure (CBP) is considered a more valuable prognostic marker of major cardiovascular diseases than peripheral blood pressure. Non-invasive evaluation of central aortic pressure by Doppler echocardiography is a hopeful tool, avoiding many complications of invasive catheter strategy and diminishing time and costs.
Methods:
A total of 118 patients were referred for elective cardiac catheterization at the Cardiovascular Medicine Department, Mansoura University. Standard transthoracic echocardiography was simultaneously performed during invasive measurement of the central aortic pressure in the cardiac catheterization lab.
Results:
A significant correlation existed between invasive systolic, diastolic, and mean aortic pressure and aortic deceleration time, with P-values of 0.0003, 0.0002, and 0.0002, respectively. A significant correlation was also found between invasive systolic, diastolic, and mean aortic pressure and aortic Velocity Time Integral (VTI), with P-values of 0.006, 0.0004, and 0.0004, respectively. A significant and more reliable equation existed to calculate mean or diastolic central blood pressure by transthoracic aortic deceleration time values.
Conclusion:
Central aortic pressure can be measured non-invasively using Doppler echocardiographic parameters: Left ventricular Mass (LVM), aortic deceleration time, and velocity time integral during routine echocardiography examination using rational equations. This represents a promising technique for further research.
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