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    Electrophysiology Study

    An electrophysiology (EP) study gathers information about the heart’s electrical system to find the cause of heart rhythm problems.

    During an electrophysiology (EP) study, your doctor and his or her accompanying medical assistance team will insert small wires called electrode catheters into the heart through a blood vessel. The catheters may direct electrical signals to your heart to stimulate it and test for an arrhythmia. They also may be used to map where abnormal signals are coming from in the heart. During an EP study, catheters may be used to regulate the heartbeat to stop an arrhythmia or to perform a catheter ablation, which treats an arrhythmia.

    What to Expect During Your Visit

    • To test for an arrhythmia, electrical signals may be sent to your heart to induce one and record any reactions.
    • You may be given medications to speed up heart rhythm to see how the heart responds.
    • The heart may be given an electrical shock (defibrillation) during the study to stop an arrhythmia.
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    Electrophysiology Study

    Frequently Asked Questions

    Electrophysiology studies are relatively painless and very safe. Like any procedure, there are extremely rare risks involved that can be explained by the doctor prior to receiving the treatment.

    An electrophysiology study tests the electrical activity of the heart to find where an arrhythmia abnormal heartbeat is coming from. The procedure is performed by having a small tube, or catheter, inserted into the patient’s artery or vein where it will be carefully guided to the heart. Small, electric impulses will be sent through the tubes to make the heart beat at different speeds. These signals from the heart will be recorded and this will allow the doctor to see where any arrhythmias are coming from. During the procedure, the patient is medicated in order to relax, however, they are usually conscious for the duration of it.

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