What is Electromyography? (EMG)

Electromyography is a procedure used to test for lower motor neuron diseases such as myopathies, and/or peripheral neuropathies. During the procedure, small electrodes are placed under the skin, and within a muscle to measure electrical discharges produced in during a muscle contraction. A computer records the electrical activity in the muscle at rest and as the muscle contracts. The electrical activity is recorded as a waveform which is evaluated based on its shape, length and frequency. This procedure can help your veterinarian decide if your pets' muscle function is abnormal. This procedure may be mildly uncomfortable for your pet during stimulation, and your pet must remain still during the procedure to eliminate unwanted voluntary action that may cause artifacts. Therefore, your pet will be under general anesthesia in order to obtain accurate results. The procedure takes about 20-30 minutes, but your pet will need some time to recover from anesthesia. You should plan on leaving your pet with us for 2-4 hours.