Snow Way to Take Care of Your Heart

ANSWER

This ECG shows normal sinus rhythm, an anterior myocardial infarction, and inferolateral injury consistent with an acute ST-elevation myocardial infarction (STEMI).

A P wave for every QRS complex and a QRS complex with every P wave, with a consistent PR interval and a rate > 60 and < 100 beats/min, signifies sinus rhythm.

Criteria for an anterior STEMI include new ST elevation (≥ 2 mm [0.2 mV]) at the J point in leads V₃ and V₄. Inferolateral injury is indicated inferiorly by ST changes in leads II, III, and aVL and laterally by the ST elevation in leads V₅ and V₆.

Subsequent cardiac catheterization showed an occluded proximal left anterior descending artery and significant diagonal and obtuse marginal disease.