Stress tests are used to determine the stability of a given system. However, a medical stress test is typically used to detect the stress on the heart. These tests can be used to determine the heart's tolerance towards a rigorous exercise regimen or other physically stressing events.
Stress tests are conducted using electrocardiograms. The heart's activity is measured both at rest and while performing some activities. This test is usually safe and painless. It is non invasive and can be administered in various different settings. Some clinicians, who prefer to take a stress test while exercising to measure exercise stress, may use echocardiography. There are other techniques like the nuclear imaging technique which may also be used to test exercise stress. Some individuals, who cannot do physical exercise, are given drugs which induce exercise- like stress and the examination can thus continue.
These tests for stress can be recommended for various reasons. Here are some of them:
The EKG, which is used to measure stress in these tests, is able to record heart's activities over a period of time. This activity is recorded in the form of a graph which is made on a moving paper or alternatively a video monitor. The electrocardiograph is sensitive enough to measure electrical impulses and rhythms. The EKG is done while the patient is doing light exercises on a treadmill or a stationary bike.