Why the study?
Does the presence of positive versus negative T waves in leads V2-V3 indicate differences in LAD stenosis or wall motion abnormalities in patients with inferior acute myocardial infarction and ST depression in V2-V3?
Does the presence of positive versus negative T waves in leads V2-V3 indicate differences in LAD stenosis or wall motion abnormalities in patients with inferior acute myocardial infarction and ST depression in V2-V3?
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T-wave polarity in V2-V3 should not differentiate LAD stenosis or wall motion abnormalities in inferior MI; leaves open its role in early posterior infarction.
We assessed whether there are differences among patients with inferior acute myocardial infarction and ST segment depression in leads V2-V3 between those with positive versus negative T waves on admission. We found no differences in the prevalence of concomitant significant left anterior descending coronary artery stenosis and anterior or posterior wall motion abnormalities on echocardiography between the two groups. Precordial ST segment depression with negative T wave may be the early electrocardiographic pattern of posterior infarction, reflecting ST segment elevation with positive T waves that would have been detected by leads facing the posterior wall.
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Porter et al. (1998) studied this question.
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