Health 
An electrocardiogram (EKG) records the heart’s electrical signals, and a stress test records this data as you exercise. Read on to learn more about what a stress test EKG is and how to prepare for it.
A stress test EKG, also called an exercise EKG, records your heart’s response during the stress of exercise. By monitoring your heart’s electrical activity, your doctor can recommend treatment options.
Physicians can request stress tests to determine the cause of symptoms such as chest pain. Stress tests can also indicate a cardiac disease or condition, such as coronary artery disease. Healthcare providers also request stress tests to determine how the heart functions after a heart attack or cardiac surgery.
Doctors can also use other types of electrocardiogram monitors to assess heart health. But with an exercise test, your healthcare provider can determine how much physical activity you can safely do.
Now that you know what a stress test is, consider how to prepare for the procedure so the EKG can collect accurate data. Tell your doctor about any prescriptions or over-the-counter medications, vitamins, and supplements you take. Also, tell them if you’re pregnant or think you might be.
Follow your healthcare provider’s instructions when getting ready for the procedure. Typically, you’ll be asked not to eat or drink for at least two hours before the test. If you’re a smoker, abstain for at least two hours before the test.
Wear comfortable exercise shoes and loose-fitting pants or shorts. Wear a short-sleeved top that unfastens in the front; men may be asked to remove their shirts.
The technician will ask you to remove jewelry and other objects that might interfere with the reading. They will ask you to open your shirt or remove it so they can place the electrodes on your chest and abdomen. Next, they will attach wires to the electrodes and possibly enter your identifying information into the EKG machine.
The technician will place a blood pressure cuff on your arm while you’re seated. They will take baseline EKG and blood pressure readings while you sit and stand.
The healthcare provider will give you instructions for using the treadmill or exercise bike. The exercise will start gently and gradually increase in intensity. Let the healthcare provider know if you experience chest pain, dizziness, extreme shortness of breath, headache, or other symptoms. The test will run for a predetermined time unless you develop severe symptoms.
Finally, the technician will slow the exercise rate so you can cool down. Then, you will sit in a chair and have your EKG and blood pressure monitored until you return to baseline levels; this may take 10–20 minutes. Once the readings are back to normal, the technician will remove the electrodes and blood pressure cuff, and you may get dressed.
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