What electrocardiogram findings support the diagnosis of ischemic heart disease

The resting 12-lead ECG remains a low-cost, effective screening tool in the detection of IHD. It should be evaluated for the presence of ST-segment depression or elevation, T-wave inversion, old MI as demonstrated by Q waves, disturbances in conduction and rhythm, and left ventricular hypertrophy. Ischemic changes in leads II, III, and aVF suggest right coronary artery disease, leads I, aVL, V5 and V6 monitor the circumflex artery distribution, and leads V1 to V4 look at the distribution of the left anterior descending artery.

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