study, or EP study, is a test to see if there is a problem with your heartbeat (heart rhythm)
and to find out how to fix it.
In this test, the doctor inserts
one or more flexible tubes, called catheters, into a vein, typically
in the groin or neck. Then he or she threads these catheters into the heart. At the tip of
these catheters are electrodes, which are small pieces of metal that conduct
electricity. The electrodes collect information about your heart's electrical
activity. Your doctor can tell what kind of heart rhythm problems you have and
where those problems are.
Sometimes the problem can be fixed at the same time. A procedure called
catheter ablation uses the catheters to destroy
(ablate) small areas of your heart that are causing the problem.
- Atrial Fibrillation: Should I Have Catheter Ablation?
- Supraventricular Tachycardia: Should I Have Catheter Ablation?
Health Tools help you make wise health decisions or take action to improve your health.
Decision Points focus on key medical care decisions that are important to many health problems.
Atrial Fibrillation: Should I Have Catheter Ablation?
Supraventricular Tachycardia: Should I Have Catheter Ablation?
Why It Is Done
An electrophysiology study is used
- Identify heart rhythm problems.
how well heart rhythm medicines work for you.
- Check your heart
before you have a
pacemaker or an
ICD (implantable cardioverter-defibrillator)
- Treat certain problems with
How To Prepare
Tell your doctor if
- Are allergic to any medicines, including iodine, or to latex.
- Have any bleeding problems.
- Are or might be pregnant.
- Have ever had clots in your legs, groin, or pelvis.
- Have a filter in a large vein to prevent clots from traveling to the heart.
Talk to your doctor about any concerns you have about the
need for the test, its risks, how it will be done, or what the results will
show. To help you understand the importance of this test, fill out the
medical test information form(What is a PDF document?).