A chemical stress test uses medications to simulate your heart’s response to exercise. A stress test can assess how well your heart performs during exercise. Your doctor may suggest a stress test if ...

A stress test measures how well your heart works when put under stress. It is ordered to assess exercise tolerance, see if your heart can respond to demands, or test if heart medications are working.

You can’t blame Jack Merendino for being nervous when he stepped on the treadmill for an exercise stress test last year. Just a few months earlier his younger brother had major heart surgery, both his ...