Stress testing, exercise cardiac
An abnormal EKG at rest, which may be due to abnormal serum electrolytes, abnormal cardiac electrical conduction, or certain medications, such as digitalis;
Heart conditions not related to CAD, such as mitral valve prolapse (drooping) or hypertrophy (increased size) of the heart; or
An inadequate increase in the heart rate and/or blood pressure during exercise.
If the initial EST does not clarify the diagnosis, additional tests are often used to clarify the condition. These further options include radionuclide isotope injection and ultrasound of the heart (stress echocardiography) during the stress test.
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