In a stress test, you walk on a treadmill with an ECG attached until you can't go any farther. Images of the heart are obtained before and after the stress test to localize any potential areas of reduced blood flow to the heart. An echocardiogram uses an ultrasound probe to generate images of the heart structures. An echo can evaluate the pumping function of the left ventricle and the function of the four heart valves. Additionally, pulmonary function tests could be done to look into how severe your asthma is.
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