Our heart is a truly amazing organ, isn't it? It pumps blood throughout our body all day long without any rest. But sometimes, when we get a little tired, when we climb stairs, or when we lift something heavy, we may feel a little tightness or a pain in our chest. Some people even have difficulty breathing. So, at times like these, you may have thought, "Oh my, is there something wrong with my heart?" At times like these, we are talking about a special test that is done to check the exact condition of your heart, especially how it works when the body receives exercise. This is called an Exercise Stress Echocardiogram .
Simply put, what is this Exercise Stress Echocardiogram?
This name is a bit long, so let's break it down into two parts.
1. Echocardiogram (Echo): This is a word you've probably heard. Simply put, it's a scan of your heart. Similar to an ultrasound scan, it uses sound waves to create a series of moving images, like a video, of your heart. These images allow your doctor to see the shape and size of your heart, the valves, and how your heart muscle is working.
2. Exercise Stress: 'Stress' here does not refer to mental stress, but to physical stress. That is, this Echo is done when you are slightly stressed and your heart is beating faster.
So, putting these two together, Exercise Stress Echocardiogram is when you walk on a treadmill or ride a bike, and then the heart is exercised and then the heart is tested with an Echo machine.
Are there other types of stress tests like this?
Yes, there are several other ways to check heart function with exercise. Let's look at the main types.
| Name of the test | What is simply happening? |
|---|---|
| Exercise Stress EKG | While you exercise, a standard EKG test measures the electrical activity of the heart. |
| Nuclear Exercise Stress Test | In this, a very small amount of a radioactive substance is safely injected into a vein. Then, a special camera is used to examine how blood flows to the heart before and after exercise. |
| Pharmacological Stress Test | Some people have difficulty exercising. For such people, this test is performed by giving them a medication like Dobutamine and increasing their heart rate as if they were exercising. |
| Pacing Stress Test | For those who have a permanent pacemaker implanted to control their heart rate, this test can be performed by accelerating the heart rate through that device. |
In what situations is this test performed?
Doctors mainly use this test to diagnose a condition called coronary artery disease . Simply put, it is done to see if the blood vessels that supply blood to the heart muscle (what we call the 'coronary arteries') are blocked or narrowed by fatty deposits.
Just as when dirt gets stuck in a water pipe, the speed of the water decreases, when the arteries in the heart become blocked, the heart does not receive the required amount of blood. Although we do not notice it normally, when we are tired, the heart needs more blood. That is when symptoms such as chest pain appear.
In addition to this main cause, this test also helps to identify or monitor the status of several other medical conditions.
- Weakening or thickening of the heart muscle (Cardiomyopathy)
- Congenital Heart Disease
- Heart Failure
- Heart Valve Disease
- Pulmonary Hypertension
Who is recommended to take this test?
If you have symptoms that could be related to heart disease, especially if those symptoms worsen with exercise or exertion, your doctor may ask you to take this test.
| Symptoms | Other cases |
|---|---|
|
|
Are there people who are not eligible to take this test?
Yes, it is not safe to stress the heart in this way for people with certain heart conditions. This test is not performed in such cases. For example:
- Aortic Dissection
- Infections/inflammation of the heart or surrounding tissues (Endocarditis, Myocarditis, Pericarditis)
- People who have recently had a heart attack
- Uncontrolled severe arrhythmias
- Severe aortic stenosis (Aortic valve stenosis)
But don't worry about this. Before you have this test, the doctor will examine your complete health condition and decide exactly whether this is suitable for you or not.
How should you prepare before the test?
To get accurate test results, you need to be well prepared. The doctor will give you instructions on this. These are the general things to follow.
| Do's/Don'ts | Description |
|---|---|
| Caffeine | Avoid caffeine-containing beverages such as coffee, tea, chocolate, and cola for 24 hours before the test. These can affect your heart rate. |
| Medications | Tell your doctor about any medications you are taking. Some medications (such as beta-blockers) may require you to stop taking them on the day of the test. Never stop taking any medications without first asking your doctor. |
| Food and drink | Do not eat or drink anything for a few hours before the test. |
| Smoking | Avoid smoking or using other tobacco products on the day of the test. |
| Clothes | Go for a walk, exercise, and wear comfortable, loose clothing and a pair of shoes. |
What happens during the test? Let's take a step-by-step look at it.
This entire process usually takes about an hour.
1. Preparation: First, a technician will place small, flat stickers (electrodes) on your chest. These will be connected to an EKG machine to monitor your heart rate. A blood pressure cuff will also be placed on your arm.
2. The first echo: Next, you will lie on your left side. A trained technician (Cardiac Sonographer) will apply a gel to your chest and place a small device (transducer) on the ultrasound machine to take images of your heart. This is the first image taken while you are resting.
3. Exercise: This is where the work begins. You will be put on a treadmill or stationary bike. Start slowly and gradually increase the speed and incline. You will exercise until you reach a predetermined ``target heart rate``, depending on your age and fitness level, or until you start experiencing symptoms. This will take about 10-15 minutes.
4. Reporting Symptoms (Very Important!): If you experience anything unusual during exercise, such as chest pain, pressure, tightness, arm or jaw pain, difficulty breathing, dizziness, or fainting , you should tell the doctor or staff immediately.
5. Second Echo: Once your heart rate reaches the desired target, you should quickly get off the treadmill and return to bed to lie down. A second Echo test will be performed immediately. This is the image taken after applying pressure to the heart.
6. Cool down: After the second Echo, you will be asked to walk on the treadmill or ride a bike again to allow your body and heart rate to return to normal.
What happens after the test?
You can go home once your heart rate and blood pressure return to normal. You may feel a little tired from the exercise. This is normal.
Are there any risks with this test?
Exercise Stress Echocardiography is a very safe test. Side effects are rare. If there is any risk, it is not because of the test itself, but because of the underlying condition of your heart. That is, when stress is placed on the heart, some people may experience an irregular heartbeat (arrhythmia) or chest pain (angina).
But there's no need to worry. Throughout the test, a doctor and trained medical staff will be closely monitoring your EKG, blood pressure, and your condition. If any dangerous conditions arise, they will immediately stop the test and provide the necessary treatment.
What do the results say?
The doctor comes to a conclusion by comparing the echo images taken while resting and the echo images taken after exercise.
- Normal Result: If all parts of the heart muscle are functioning well both at rest and after exercise, it means that the heart is getting enough blood.
- Abnormal Result: If some parts of the heart muscle appear to have decreased function after exercise, it means that the arteries supplying blood to those parts may be blocked.
Once the results are in, your doctor will explain what they mean to you in simple terms. They will also talk to you about what to do next, perhaps whether more tests are needed or whether treatment should be started.
Take-Home Message
- An Exercise Stress Echocardiogram is a very safe and important scan that checks how your heart works during exercise.
- This is mainly used to identify whether the arteries that supply blood to the heart are blocked.
- Follow the doctor's instructions carefully before the test (especially avoiding caffeine and food).
- If you experience any discomfort during the test, such as chest pain or dizziness, do not panic and inform the medical staff immediately.
- Don't worry about the test results. Your doctor will explain everything and guide you on the next steps you need to take.
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