Some tests, such as an echocardiogram, are used to identify abnormalities within the heart or blood vessels.
They are typically used to establish a baseline in people with no known cardiac disease.
They are typically performed alongside an ECG and stress test to investigate the possible causes.
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Certain patterns on an ECG, for example, indicate amyocardial infarction(heart attack).
Similarly, stress tests can be used to help diagnoseangina.
They can also be used to help determine the cause ofsyncope(fainting).
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