Why the study?
Does ST segment elevation in the aVR lead indicate specific coronary occlusions in patients with acute coronary events?
Does ST segment elevation in the aVR lead indicate specific coronary occlusions in patients with acute coronary events?
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The aVR lead on ECG provides important diagnostic and prognostic information in acute coronary events, specifically for identifying left main or severe multi-vessel disease.
When interpreting electrocardiograms aVR lead is often neglected although it provides significant diagnostic and prognostic capabilities. This lead looks directly at the upper right side of the heart and provides specific information concerning the outflow tract of the right ventricle and the basal part of the ventricular septum. This part of the septum is usually nourished by the septal branch of the proximal part of the RIA. Because of this, the literature shows that ST segment elevation in aVR ≥ 1 lead during acute coronary events may indicate occlusion of the left main coronary artery, occlusion of proximal RIA or severe three-vessel disease. This may help in the diagnosis and proper treatment in these patients.
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Ivanov et al. (2014) studied this question.
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