Skip to main content
Dr. Golian logo

Patient Education

12-Lead EKG (Electrocardiogram)

A quick, painless in-office test that gives a clear window into your heart's rhythm and electrical health.

A 12-lead electrocardiogram (EKG) is a fast, painless test that records your heart's electrical activity to evaluate its rhythm and detect signs of cardiac strain or abnormality. Performed right in the office, it's a cornerstone of cardiovascular disease prevention and a routine part of pre-operative evaluation.

What to Expect During Your EKG

You'll rest comfortably while a technician places ten small adhesive electrodes on your chest, arms, and legs. The machine records your heart's electrical signals from twelve angles, capturing a complete picture in just a few seconds.

The test itself takes only a minute or two and is entirely painless — no needles, no electricity sent into your body. Dr. Golian reviews the tracing and discusses the results with you, often during the same visit.

How to Prepare for Your EKG

Little preparation is needed for an EKG. Wearing a two-piece outfit makes electrode placement easier, and we ask that you avoid applying lotions or oils to your chest beforehand, since they can interfere with the adhesive sensors.

Let us know about any medications you take, especially those affecting heart rate or rhythm, as part of your medication reconciliation. If you have high blood pressure or known heart concerns, this is a good time to share your history.

After Your EKG

There is no recovery time — you can return to your normal activities immediately. Dr. Golian interprets your results and explains what they mean in the context of your overall health.

If the EKG suggests a rhythm irregularity or other finding that warrants further evaluation, she may recommend additional testing or a cardiology referral, with coordinated care including specialists at Cedars-Sinai Medical Center when appropriate.

When an EKG May Be Recommended

  • As part of pre-operative clearance before surgery
  • To evaluate symptoms such as palpitations, chest discomfort, or shortness of breath
  • To monitor the heart in patients with high blood pressure or known cardiovascular risk
  • To establish a baseline tracing during a comprehensive physical exam
  • To assess the effects of certain medications on heart rhythm

Frequently Asked Questions

1Does an EKG hurt?
Not at all. The electrodes simply rest on your skin to read your heart's natural electrical signals — nothing is sent into your body, and there are no needles involved.
2How long does an EKG take?
The recording itself takes only a minute or two. With electrode placement and a brief review of your results, the whole visit is usually quite short.
3Why do I need an EKG before surgery?
An EKG is a standard part of pre-operative clearance because it helps confirm your heart is healthy enough for anesthesia and surgery, and it can reveal rhythm issues that affect surgical planning. You can learn more on our pre-op EKG and pre-operative risk assessment pages.
4Can an EKG detect a heart attack?
A 12-lead EKG can show signs of a current or past heart attack as well as certain rhythm abnormalities. It is one tool among several, and Dr. Golian interprets it alongside your symptoms, history, and any additional testing.
5Do I need to stop my medications before an EKG?
Usually no — take your medications as prescribed unless Dr. Golian advises otherwise. Just be sure to share your full medication list so your results can be interpreted accurately.

Curious about your heart health?

Schedule a visit to discuss whether a 12-Lead EKG (Electrocardiogram) is right for you and get clear, unhurried answers.

Schedule a Consultation

Medical Disclaimer

The information on this site is for general educational purposes only and is not medical advice, diagnosis, or treatment. Reading this site does not create a doctor–patient relationship. Always consult a qualified healthcare professional for personal guidance. If this is an emergency, call 911. Mentions of medications, devices, or procedures are informational and not endorsements. Full medical disclaimer.

Some listed indications involve investigational/off-label use. Learn more.