✍️ Written by the MedTestBD Editorial Team · Last reviewed: July 2026
What is an ETT?
An ETT (Exercise Tolerance Test), also known as a stress test or treadmill test, evaluates how your heart performs under physical exertion. You walk or run on a treadmill at increasing speeds while your heart rate, blood pressure, and ECG are continuously monitored. Because some heart problems only appear during activity, the ETT can reveal issues that a resting ECG would miss.
Why is an ETT Done?
- To investigate chest pain or shortness of breath that occurs during physical activity
- To detect coronary artery disease — reduced blood flow to the heart often shows up during exercise
- To assess heart function before starting a cardiac rehabilitation or exercise programme
- To evaluate heart rhythm abnormalities that are triggered by exertion
- To determine safe levels of physical activity after a heart attack or heart surgery
- To assess the effectiveness of heart medications or cardiac interventions
What the Results Mean
| Result | Interpretation |
|---|---|
| Normal | Heart rhythm and blood flow remain normal throughout exercise — low risk of significant coronary disease |
| Abnormal (ST depression on ECG) | Suggests reduced blood flow to the heart during exertion — further testing like angiogram may be needed |
| Inconclusive | Result unclear — doctor may recommend imaging-based stress test |
An abnormal ETT does not confirm coronary artery disease on its own — it indicates a higher probability that warrants further investigation. A normal ETT is reassuring but does not completely exclude disease.
How to Prepare for an ETT
- Avoid heavy meals for 2–4 hours before the test
- Avoid caffeine, smoking, and alcohol on the day of the test
- Wear comfortable clothing and supportive sports shoes suitable for walking or running
- Inform your doctor about all medications — some heart and blood pressure medicines may need to be paused as they affect the test result
- Tell your doctor if you have chest pain, dizziness, or breathlessness at rest before the test
- Avoid heavy exercise in the hours leading up to the test
ETT Test Price in Bangladesh
ETT test prices vary between cardiac centers and hospitals across Bangladesh. Compare ETT test prices on MedTestBD →
⚠️ This information is for general reference only. Always consult a qualified physician before undergoing any medical test.
