Electrocardiographic Differentiation of Occlusion of the left Circumflex Versus the Right Coronary Artery as a Cause of Inferior Acute Myocardial Infarction

摘要: To determine whether the admission electrocardiogram can identify left circumflex or right coronary artery occlusion as cause of an inferior acute myocardial infarction (AMI), findings from electrocardiography and angiography performed within 12 hours each other were retrospectively assessed in 41 consecutive patients with AMI. All had ST-segment elevation 1 more leads (II, III aVF). Of occlusion, 10 (83%) lateral (aVL, V5 V6) without depression lead I. Similar electrocardiographic noted only 29 (4%) (p < 0.001). precordial V1–V3 was equally prevalent both groups. Thus, presence 2 isoelectric elevated ST segment I identified a sensitivity 83%, specificity 96%, positive predictive accuracy 91% negative 93%. When these criteria prospectively applied to additional cohort 19 AMI (5 14 occlusion), predicted 80%, 93%, 100% 12-lead assist differentiating