An
electrophysiology (EP)
study is a type of
diagnostic test used to determine if you have abnormal heart
rhythms called arrhythmias.
An EP study is performed in the electro-physiology lab by a
cardiologist who specializes
in arrhythmias, and is assisted by a specially trained team
of technologists and
nurses.
An EP study measures the activity of your heart's electrical
system and enables your cardiologist to gather valuable
and detailed information about any abnormal
heart rhythms or the cause of symptoms you may be
experiencing, such as passing out (syncope).
During this test, one or more soft, flexible wires, called electrode
catheters, are inserted into a vein in your groin or
sometimes in a vein under your collar bone. The electrophysiologist
uses X-ray to gently guide these special catheters into your
heart. The catheters can sense electrical impulses and also
stimulate different areas of your heart. In this way, your doctor
can pinpoint the locations in your heart that may be causing
arrhythmias.
An EP study usually takes one and one half to two hours to complete. You will be given sedative medication to keep you very sleepy
during the procedure. After the procedure you will be asked to lay flat for at least three hours. If your doctor orders an EP study
for you, you will receive more detailed information and instructions when the test is scheduled.
