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Electrocardiogram for Dogs

An electrocardiogram (ECG, or EKG, using the German spelling) is a recording of the electrical impulses that are generated when the heart is beating. When any irregular heart rhythm is detected on clinical examination, an electrocardiogram should be performed. The small electrical impulses normally generated by the heart are amplified 3,000 or more times and recorded by the ECG machine. An ECG can detect minor disturbances in the heartbeat or heart rhythm and allow your veterinarian to diagnose many types of heart disease.

electrocardiogram-1_2009An ECG is a simple, non-invasive test to perform. Your pet is usually placed in a standing or lying position and electrodes are attached to the elbows and knees. A conducting gel or liquid is applied to improve electrical conduction between the dog's skin and the electrodes. The ECG machine merely records the electrical impulses from the dog. There are no unpleasant sensations nor is there any danger to the pet.

In some cases a more prolonged ECG examination is required. If this is necessary, a monitor called a Holter Monitor or Recorder will be used.  This monitor consists of a small pack that the dog wears for 24-72 hours, and records all heart activity during this time. This is a technique that is commonly used to precisely diagnose the reason for intermittent collapse in dogs with abnormal heart rhythm.

Often an ECG examination is combined with chest radiographs (x-rays) or ultrasound examination of the heart (echocardiography).  ECG analysis is a safe, simple test that provides your veterinarian with valuable information about your pet's health.

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