What an Exercise Stress Test Reveals About Your Heart Health

A standard electrocardiogram (EKG) provides a snapshot of your heart’s activity at rest, but that doesn’t always tell the whole story. Certain cardiac concerns stay hidden until your system is under stress.

At Bridgewater Primary Care & Cardiology, LLC, our providers offer advanced cardiac testing to identify early signs of heart disease and other abnormalities. Read on to learn about exercise stress testing and what it can reveal about your heart health.

What is an exercise stress test?

An exercise stress test monitors how your heart responds during physical activity, which helps us diagnose underlying conditions that a resting EKG might miss. It typically involves walking on a treadmill or riding a stationary bike while hooked up to an EKG machine.

As you exercise, we gradually increase the intensity to reach a target heart rate. Our team evaluates how well your heart performs under pressure by tracking:

• Electrical activity (the signals that tell your heart to beat)
• Heart rate and rhythm
• Blood pressure and breathing
• Physical symptoms, such as chest pain or an unusual shortness of breath

If physical limitations make traditional exercise difficult, alternative options are available. A chemical stress test uses medication to simulate the effects of exercise, so we can safely gather the necessary data for a diagnosis.

When is an exercise stress test necessary?

The data from your test provides valuable information we use to diagnose and manage chronic conditions. Here are several reasons we may recommend an exercise stress test:

Investigating unexplained symptoms

If you experience chest pain, shortness of breath, or a racing heartbeat during activity, this test helps us confirm or rule out a cardiac issue as the cause.

Screening for coronary artery disease (CAD)

Your heart needs more oxygen-rich blood when you’re active. If your arteries have narrowed, the stress test can reveal inadequate blood flow or partial blockages before they lead to a more serious event, such as a heart attack.

Identifying arrhythmias

In some cases, an arrhythmia (abnormal heartbeat) only becomes apparent when your heart rate reaches a certain level. An exercise test can catch irregularities in rhythm that a resting EKG may not.

Gauging treatment effectiveness

If you are already being treated for a cardiovascular condition, we may use a stress test to see how well your medications or recent procedures are managing the workload on your heart. We can then make any necessary adjustments to your treatment plan.

How to prepare for your test

To ensure the most accurate results, a little preparation goes a long way. Our team provides you with specific instructions prior to your test, but here is a general idea of how you should prepare:

• Wear sturdy sneakers and breathable, nonrestrictive clothing.
• Avoid all caffeine for at least 24 hours before your test — including decaf coffee and chocolate, which contain small amounts of caffeine.
• Verify the timing for meals and medications, as you may need to fast or skip certain doses on the morning of the test.

Plan to arrive a few minutes early so you can discuss any last-minute questions with our staff before the evaluation begins. You can typically return to your normal diet and daily activities immediately after the test is complete.

Whether you’re managing an existing condition or investigating new symptoms, our team is here to support your heart health. Contact Bridgewater Primary Care & Cardiology, LLC, in West Bridgewater, Massachusetts, to schedule your visit.