ST elevation in posterior leads V7-9

ST elevation in V7-9 suggests posterior infarction. It is detected by recording the special posterior leads by moving the V4-6 electrodes to the posterior axillary line (V7), tip of the scapula (V8) and paraspinal region (V9) keeping them in the same horizontal plane as the normal V6.

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In the ECGquest archives, this ECG has been tagged with: - Chest pain Posterior leads Anterior ST depression ST elevation in posterior leads V7-9 Acute Posterior MI Dr Smith's ECG Blog CC BY-NC
How much time are you willing to wait for OMI to become STEMI (if it ever does)?

This ECG is from a man in his 60s who presented with chest pain on a background of stroke and hypertension. This was the initial ECG.

This ECG shows ST depression in V2-3 and ST elevation in posterior leads V7-9 (leads labelled V4-6) due to posterior MI.