Echocardiography as a Noninvasive Swan-Ganz Catheter
Key result
The interval between onset of mitral E and annular early diastolic velocity by tissue Doppler can estimate left ventricular filling pressure in patients with mitral valve disease.
Why the study?
Can the interval between onset of mitral E and annular early diastolic velocity (Ea) by tissue Doppler be used to estimate left ventricular filling pressure?
Design
Editorial
Authors
Discussion
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Implication
Tissue Doppler echocardiography measuring the interval between mitral E and annular Ea provides a noninvasive method to estimate left ventricular filling pressure, acting as a noninvasive Swan-Ganz catheter.
Key Points
- This study aims to evaluate the use of echocardiography to estimate left ventricular filling pressure in patients with mitral valve disease.
- Analysis of the interval between mitral E and annular early diastolic velocity (Ea) using tissue Doppler imaging.
- Observation of changes in Ea under varying conditions of heart failure.
- Comparison of echocardiographic findings in patients and animal models.
- The interval T EEa was significantly prolonged in patients with worsening heart failure, indicating impaired filling pressure.
- In normal subjects, Ea onset occurred before peak mitral inflow, while in patients, it was delayed, suggesting altered LV dynamics.
- Clinical correlations were found between T EEa and time constants of LV relaxation.
Structured PICO
Can the interval between onset of mitral E and annular early diastolic velocity (Ea) by tissue Doppler be used to estimate left ventricular filling pressure?
E
Exposure
Echocardiography (tissue Doppler, T EEa interval)
O
Outcome
Estimation of left ventricular filling pressuresurrogate
Tissue Doppler echocardiography measuring the interval between mitral E and annular Ea provides a noninvasive method to estimate left ventricular filling pressure, acting as a noninvasive Swan-Ganz catheter.
Cite This Study
Jae K. Oh (2005) conducted an editorial in Mitral valve disease and heart failure. Echocardiography (T_E-Ea interval) was evaluated. The interval between onset of mitral E and annular early diastolic velocity by tissue Doppler can estimate left ventricular filling pressure in patients with mitral valve disease.