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All ECG 56

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Source: Learn the Heart

The third and fourth complexes of this ECG show sinus bradycardia at about 50 beats per minute. The remainder of the tracing shows atrial bigeminy with a coupled aberrant atrial premature beat following the sinus beat by about 640 msec. There are also abnormal Q waves in I-AVL-V4-V5-V6 with ST-T wave abnormalities consistent with a prior lateral myocardial infarction.

Related Topic Reviews: Premature Atrial Contractions