Electrocardiogram 

An electrocardiogram may be recommended for many reasons, including the diagnosis of a new or emergent heart condition or management of an existing condition. EKG testing can be used to diagnose a variety of conditions, including:

• Arrhythmia 
• Cardiomyopathy 
• Congenital heart defects 
• Coronary artery disease 
• Heart attack 
• Heart failure 
• Heart valve diseases  

You may need an EKG test if you’re experiencing symptoms such as chest pain, an irregular heartbeat, dizziness or lightheadedness, excessive fatigue or shortness of breath. 

Most EKGs are known as “resting electrocardiograms.” During the test, you’ll be asked to lie comfortably and still on your back. Try to relax during the test since movements or muscle tension can affect the results. 

If you’re undergoing an EKG on a scheduled basis, avoid lotions and creams on the day of the test and wear a shirt that is easily removable. Before the test begins, 12 electrodes (or leads) will be attached to the skin on your chest, arms and legs using adhesive pads. The entire process, including the EKG itself, takes between five and 10 minutes. 

In some cases, your provider may request an “exercise EKG,” which will be performed while you’re physically active, or the use of a Holter monitor, which you’ll wear for 24 hours to record your heart’s electrical activity. 

An EKG is a painless diagnostic test that poses no risks. At most, you may experience some minimal discomfort or irritation when the adhesive pads attaching the electrodes to your skin are removed. 

While some people have the misconception that an EKG sends electricity into the body, this is untrue. An electrocardiogram only records the electrical activity that happens naturally within your body.  

Unless you’ve been told to avoid certain activities while you wait for a diagnosis, you can return to your normal activities immediately after an electrocardiogram.