What is an Electrophysiology (EP) Study?

 

An Electrophysiology (EP) Study is a test that examines the electrical activity of your
heart to diagnose abnormal heart rhythms (arrhythmias). It involves inserting catheters
into your heart to measure electrical signals and assess how they travel through your heart.

 

What happens during an Electrophysiology (EP) Study?

 

During an EP study, you will lie on an examination table, and local anesthesia will be
applied to numb the insertion sites, usually in the groin or neck.
A doctor inserts thin, flexible catheters through a blood vessel and guides them
to your heart using X-ray imaging. Once in place, the catheters measure the
electrical activity of your heart. The doctor may also use electrical impulses to provoke
arrhythmias and determine their source. The entire procedure typically takes a few hours.

 

Why would I need an Electrophysiology (EP) Study?

 

You might need an EP study to diagnose the cause of abnormal heart rhythms, evaluate symptoms like palpitations or fainting, determine the effectiveness of medications or treatments for arrhythmias, assess the risk of future heart problems, or plan for procedures such as ablation to correct arrhythmias.

 

Who needs an Electrophysiology (EP) Study?

 

An Electrophysiology (EP) study may be necessary if you have the following symptoms:

• Individuals experiencing palpitations, dizziness, or fainting

• Patients who have survived a cardiac arrest or have a high risk of sudden cardiac death

• Individuals being considered for procedures like catheter ablation or implantation of a pacemaker or defibrillator

 

What are the risks of an Electrophysiology (EP) Study?

 

While generally safe, an EP study carries some risks, including:

• Bleeding or infection at the catheter insertion site

• Blood vessel damage, heart perforation and arrhythmia induction that could require treatment 

• Very rarely, stroke or heart attack. 

 

It's important to note that these risks are rare and the benefits of the test typically outweigh the risks. Additionally, the test is performed under the supervision of trained medical professionals who are equipped to handle any complications that may arise. Your doctor will review your medical history and assess your overall health to determine whether the benefits of the test outweigh the risks for you. If you have concerns about the risks of a stress echocardiogram, discuss them with your doctor before the test.
 

How do I prepare for an Electrophysiology (EP) Study?

 

Follow your doctor's instructions on fasting and medication adjustments. Provide your full medical history and note any allergies. Arrange transportation home, wear comfortable clothing, and prepare to change into a hospital gown. Complete any required pre-tests. Bring only essential items and leave valuables at home. Discuss the procedure, risks, and benefits with your doctor.