How is posterior-wall myocardial infarction (MI, heart attack) identified on ECG?

Updated: May 07, 2019
  • Author: A Maziar Zafari, MD, PhD, FACC, FAHA; Chief Editor: Eric H Yang, MD  more...
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Answer

True posterior-wall MIs may cause precordial ST depressions, inverted and hyperacute T waves, or both. ST-segment elevation and upright hyperacute T waves may be evident with the use of right-sided chest leads.

Hyperacute (symmetrical and, often, but not necessarily pointed) T waves are frequently an early sign of MI at any locus.


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