Uncovering Hidden Cardiac Risks
1. Why Take a Stress Test?
Your heart needs more oxygen when you exercise. If your arteries are narrowed by plaque, the heart muscle won’t get enough blood, causing EKG changes.
Reasons for the Test:
- Diagnosing Coronary Artery Disease: It is the primary first-line test for identifying narrowed arteries that restrict blood flow.
- Investigating Symptoms: Finding the true cause of chest pain (angina), unexplained fatigue, or shortness of breath that only happens during physical activity.
- Assessing Treatment: Checking if your current heart medications are working, or determining safe levels of exercise after a heart attack.
A Monitored Workout
2. The Exercise Procedure
The test involves walking on a treadmill while your heart is continuously monitored by a specialized technician and cardiologist.
The Clinical Process:
- Preparation: Sticky EKG patches are attached to your chest to record your heart’s electrical signals. A blood pressure cuff is placed on your arm.
- The Walk: You start walking slowly on a treadmill. Every three minutes, the speed and incline of the treadmill will increase, making it feel like you are walking up a steep hill.
- Monitoring: The doctor continuously monitors your EKG, heart rate, and blood pressure, watching for any abnormal electrical changes or asking if you feel chest pain or dizziness.
A Clear Path Forward
3. Results and Next Steps
The test stops when you reach a target heart rate, if you become too tired, or if the doctor sees concerning changes on the EKG.
Post-Procedure:
- Cool Down: You will walk slowly for a few minutes to cool down, and your heart rate will be monitored until it returns to normal.
- Immediate Analysis: The cardiologist reviews the tracing immediately. A “Negative” result means your heart handled the stress well.
- Further Action: If the result is “Positive” (showing poor blood flow), the doctor will likely recommend a more definitive test, such as an Echocardiogram or a Coronary Angiography.