Related Experiment Videos
Portable spectral Doppler echocardiographic device: overcoming limitations.
J Quiles1, M A García-Fernández, P B Almeida
1Non-invasive Cardiology Laboratory, Hospital Universitario Gregorio Marañón, Madrid, Spain.
Heart (British Cardiac Society)
|August 19, 2003
Summary
New handheld echocardiography devices with Doppler capabilities now accurately assess heart function and valve disease. However, they still have limitations in evaluating pulmonary pressures, potentially leading to misdiagnosis.
Area of Science:
- Cardiology
- Medical Imaging
- Diagnostic Technology
Background:
- Portable echocardiographic devices offer insights into heart anatomy and function.
- Previous limitations included a lack of Doppler modes for hemodynamic data acquisition.
- Handheld devices aim to overcome these limitations.
Purpose of the Study:
- To evaluate the Doppler capabilities of a new handheld echocardiographic device.
- To compare its performance against a standard platform echocardiography system.
Main Methods:
- Blinded comparison of a handheld device and a standard echocardiography machine.
- 98 consecutive patients were imaged using both devices.
- Pulsed wave and continuous wave Doppler measurements were recorded for various cardiac parameters.
Main Results:
- Excellent agreement was observed for pulsed wave Doppler measurements of diastolic function (E/A ratio, deceleration time).
- Good agreement was found for continuous wave Doppler measurements of aortic ejection and tricuspid regurgitation.
- Significant discrepancies in tricuspid regurgitation assessment led to misdiagnosis in eight patients with pulmonary hypertension.
Conclusions:
- Handheld echocardiography devices with Doppler are now suitable for evaluating valvar disease and diastolic function.
- These devices overcome previous limitations in assessing hemodynamic variables.
- Limitations persist in the accurate evaluation of pulmonary pressures.