Which ECG criteria must prompt your suspicion for left main infarction?
ST elevation in aVR, if it is at least 0.1mV and higher than an elevation in V1 if present.The amplitudes of ST elevations and ST depressions in all 12 leads are added to a total sum. The sum of all these ST segment alterations in all 12 leads is more than 18mm.Presence of indirect infarction signs in II, III, and v3 to v5
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