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Merck Manual
Veterinary Manual
The trusted provider of veterinary information since 1955

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VETERINARY PET
ECG, atrial fibrillation, dog
ecg-atrial-fibrillation-dog-kittleson-sized
ECG, atrial fibrillation, dog

    This ECG of a dog shows a fast ventricular rate (230 bpm) and an irregular rhythm. The complexes are supraventricular (normal). There are no P waves. This combination is diagnostic of atrial fibrillation.

Courtesy of Dr. Mark D. Kittleson.

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Heart Disease: Conduction Abnormalities in Dogs and Cats

Merck & Co., Inc., Rahway, NJ, USA (known as MSD outside of the US and Canada) is dedicated to using the power of leading-edge science to save and improve lives around the world.  The Merck Veterinary Manual was first published in 1955 as a service to the community.  The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Vet Manual outside of North America.

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