Case Studies In Small Animal

Cardiovascular Medicine

Home Up .    Radiographs ECG 2D Echo M-Mode Color Flow Doppler Diagnosis

Case 9

Electrocardiogram

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This ECG was recorded from Bingo while he was resting. There are six limb leads recorded (three simultaneously each time) as well as a "rhythm" strip of lead II along the bottom. A 1 mV calibration marker starts off each tracing to the left. The paper speed is 50 mm/second. The QRS complexes are approximately 0.4 seconds apart which means the heart rate is about 150 beats/minute. On the rhythm strip, the sixth and eighth complexes come in too early (i.e., they are premature), have a negative P wave in front of them, and have normal appearing QRS complexes.

Quiz

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