Case Studies In Small Animal

Cardiovascular Medicine

Home Up .    Radiographs ECG 2D Echo Doppler Diagnosis

Case 3

Color Flow Doppler

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Continuous Wave Spectral Doppler

case3cw.jpg (26056 bytes)

The color flow Doppler (first picture) shows a high velocity systolic jet (note that the cursor on the ECG is right after the QRS complex) that originates at the same region as the arrow on the two-dimensional echocardiogram shown previously. The jet projects into the right ventricular cavity. The continuous wave Doppler measures the peak velocity of this jet to be 4.81 meters/second. This translates into a pressure gradient across this region of 92 mm Hg. The color flow Doppler confirms the anatomic diagnosis and the continuous wave Doppler provides a measure of the severity of the lesion (small, medium, or large).

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Mark D. Kittleson, D.V.M., Ph.D. All rights reserved.