Case 13 — Spectral Doppler (Continuous Wave)

Continuous wave Doppler tracing taken via a transesophageal probe while the dog was anesthetized. The CW cursor is placed across the RVOT and MPA in the turbulent jet. Peak systolic velocity is 5.7 m/s, translating to a pressure gradient of 129 mmHg. 60-cycle interference is present on the ECG trace.
CW Doppler (transesophageal, under anesthesia). Peak systolic velocity: 5.7 m/s; pressure gradient: 129 mmHg. Signal is above the baseline (flow toward the transducer in the esophagus).

Video of a transesophageal color flow Doppler echocardiogram from another dog with the same abnormality

Same video at half speed

Quiz

1. How severe is this dog’s disease?

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