Heart Failure Rat Myocardial Cells and Study of Pathophysiological Characteristics, Relation Result and Patients with Old Inferior Myocardial Infarction (P < 0.05 or P < 0.01). The sensitivity, specificity, negative predictive value, and positive predictive value of QRS complex being QS in lead VE for the diagnosis of patients with old inferior myocardial infarction were 76.7%, 100%, 93.5%, and 100%, respectively. Conclusion: Electrocardiographic characteristics in lead VE were shown. QRS complex being QS configuration in lead VE is useful for the diagnosis of patients with old inferior myocardial infarction.
**Keywords**: Lead VE; Electrocardiography; Old Inferior Myocardial Infarction
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