EKG and ECG are two names for the same test, an electrocardiogram. It records the heart's electrical activity in a few minutes using sticky patches on the skin. It can show heart rate, rhythm problems, and signs of strain or a past heart attack, but it cannot rule out every heart problem, and some conditions need more testing.
EKG and ECG mean the same thing: an electrocardiogram. "ECG" comes from the English spelling, and "EKG" comes from the German spelling, elektrokardiogramm, which became common in the United States partly to avoid confusion with EEG, a brain test. Whichever name you hear, the test is a quick, painless recording of your heart's electrical activity.
What an EKG measures
Each heartbeat starts with an electrical signal. Small sticky patches (electrodes) on your chest, arms, and legs pick up that signal, and the machine prints it as a series of waves. A standard 12 lead EKG looks at the heart from 12 angles.
What an EKG can show
- Heart rate, including a rate that is too fast or too slow
- Irregular rhythms, such as atrial fibrillation
- Signs that the heart muscle is thickened or strained, sometimes from long term high blood pressure
- Signs of a current or past heart attack
- Effects of certain medications and blood mineral levels on the heart
What an EKG cannot show
An EKG is a snapshot of a few seconds. It may miss rhythm problems that come and go, and a normal EKG does not rule out all heart disease, such as narrowed arteries that only cause symptoms with exertion. Your provider may recommend other tests, such as a heart monitor worn at home, an echocardiogram, or a stress test, or refer you to cardiology.
How to prepare
- Wear a top that is easy to open or remove
- Skip heavy lotions or oils on your chest that day
- Bring a list of your medications
- Let the team know about a pacemaker or recent symptoms
The recording itself takes a few minutes. You lie still and breathe normally. You will not feel any electricity.
When not to wait for an appointment
Call 911 for chest pain or pressure, trouble breathing, fainting, or sudden weakness, numbness, or trouble speaking. These need emergency care, not an office EKG.
Our practice performs EKG testing in the office at both our Hudson and Trinity offices, and your provider reviews the results with you during the visit. EKGs often go hand in hand with heart disease care and high blood pressure care. New patients age 18 and older are welcome. Appointment availability is determined by the office.
Frequently asked questions
Is an EKG the same as an ECG?
Yes. They are two abbreviations for the same test, the electrocardiogram.
Can an EKG detect a heart attack?
It can show signs of a current or past heart attack, but a normal EKG does not rule out all heart problems.
How long does an EKG take?
The recording takes a few minutes. Most of the visit is placing the patches and reviewing results.
This content is provided for general educational information and is not a substitute for personalized medical advice, diagnosis, or treatment. Medical needs and treatment options vary from person to person. If you have questions about your health or whether a service may be appropriate for you, contact Internal Medicine MD to speak with a member of the care team or schedule an appointment with a qualified medical provider. If you are experiencing a medical emergency, call 911 or seek emergency medical care.
