A cardiac stress test is performed by a doctor and it tests how much blood is able to reach your heart when you are exercising or physically active. This amount of blood flow, which is also known as arterial blood flow, affects how much oxygen is taken to the heart muscle called the myocardium.This flow is measured and then compared to the amount of flow that occurs while resting. This cardiac stress test doubles as a test to see how fit a patient is.There is no need to worry that your anxiety over the results will affect the test. Emotional stress will not affect how well your body is able to perform.

This test specifically looks for irregularities in the blood flow that suggest there is an imbalance. A “positive” irregularity result from the test means that the left ventricle is not getting enough or is trying to pass too much blood.It is quite common for false positives to be achieved on this test. However, after the test is taken a second or third time with positive results, it means that positive is most likely correct.