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Medicine

Reading an ECG for Acute Myocardial Ischemia

Quick fact

ST-segment depression on an ECG is a classic sign of myocardial ischemia, and it can appear even before a heart attack occurs, offering a critical window for intervention.

Why this is interesting

Imagine a silent electrical storm in your chest that can be caught on paper—but only if you know where to look. How can a simple trace of squiggles tell doctors whether your heart is starved of oxygen?