Inferior ST depression occurs in leads II, III and aVF. It is important to look for reciprocal changes, e.g. in aVL, which suggest acute coronary occlusion.
See also: ST segment
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This ECG is from an elderly male who presented with chest pain. He has a pacemaker. This was his first prehospital ECG.
This ECG shows ventricular paced rhythm with concordant STE in aVR and concordant ST depression in II, III, aVF. The cause was most likely a proximal LAD or left main occlusion. This was missed and the patient died.