Diagnosic criteria

  Localized PR segment elevation or depression may be observed.

  Atrial arrhythmias may develop.

  In patients with atrial infarction, Ta wave depression is seen more often than Ta wave elevation.


  Journal of Electrocardiology 2011;44:635-640.

ECG 1. Atrial infarction during acute inferior myocardial infarction. Circumflex coronary artery (Cx) was totally occluded by
thrombus just before giving the left atrial branch. The right coronary artery (RCA) had 70% stenosis.
Localized depression of
PR segment
is observed.

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