As a cardiovascular specialist, I can explain that a positive stress test indicates that there is some form of abnormality detected during the test that suggests potential heart problems. Here's a breakdown of what each point could mean: 1. Changes in the electrocardiogram (ECG) show a low oxygen supply to the heart muscle; this could mean that there is a blockage or narrowing in the coronary arteries that supply blood to the heart. 2. If you develop trouble breathing or chest pain during the test, it could be a sign of angina, which is chest pain due to insufficient oxygen supply to the heart muscle. 3. Your heart rate, blood pressure, or both fails to increase adequately during exercise; this could indicate that the heart is not responding normally to the increased demand for blood flow during physical activity. 4. The results of a nuclear stress test show areas of your heart are not receiving enough oxygen during exercise; this is a more detailed type of stress test that uses imaging to visualize blood flow to the heart muscle and can identify specific areas that are not getting enough blood supply. read more >>

Changes in the electrocardiogram show a low oxygen supply to the heart muscle; You develop trouble breathing or chest pain; Your heart rate, blood pressure or both fails to increase adequately during exercise; The results of a nuclear stress test show areas of your heart are not receiving enough oxygen during exercise.read more >>