A cardiac stress test evaluates heart function during physical exertion, typically on a treadmill or stationary bike. This assessment identifies limitations in blood flow to the heart muscle that may not be apparent at rest. A stress echocardiogram combines this evaluation with ultrasound imaging of the heart. The ultrasound is performed both before and immediately after exercise, providing real-time visualization of heart wall motion.
The utilization of imaging enhances diagnostic accuracy compared to solely monitoring electrical activity. Visualizing how the heart muscle contracts during stress allows clinicians to detect subtle abnormalities. This capability is particularly beneficial in identifying areas of the heart muscle that are not receiving adequate blood supply, a condition indicative of coronary artery disease. Its value lies in its non-invasive nature and ability to provide valuable information about cardiac health.