rambling-medic: How do doctors look at ECGs and determine a patient has had a heart attack in the past? Well there is a pattern of evolution of a myocardial infarction seen on an ECG. A sign of an old infarct is the presence of pathological Q waves.

rambling-medic: How do doctors look at ECGs and determine a patient has had a heart attack in the past? Well there is a pattern of evolution of a myocardial infarction seen on an ECG. A sign of an old infarct is the presence of pathological Q waves.

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