Recent Blog Articles

Electrophysiological Testing of the Heart

Updated: December 06, 2019

What is the test?

If you have an arrhythmia (abnormal heart rhythm), cardiologists can use an electrophysiologic study (EPS) to find out what part of the heart is causing this change in rhythm and what medicines will work best to bring that rhythm back to normal. Sometimes doctors will recommend a treatment called ablation that can be done during EPS testing. Ablation uses radiofrequency waves (like microwaves) to destroy a very small area of heart tissue to stop the arrhythmia from happening.

How do I prepare for the test?

You will need to sign a consent form giving your doctor permission to perform this test. Tell your doctor if you have ever had an allergic reaction to lidocaine or the numbing medicine used at the dentist's office. Also tell your doctor if you have ever had an allergic reaction to any heart medicines.

To continue reading this article, you must log in.

Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.

  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »

I'd like to receive access to Harvard Health Online for only $4.99 a month.

Sign Me Up

Already a member? Login ».

Disclaimer:

As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.