Abstract
The traditional approach to the ECG diagnosis of left ventricular hypertrophy (LVH) is focused on the best estimation of left ventricular mass (LVM) i.e. finding ECG criteria that agree with LVM as detected by imaging. However, it has been consistently reported that the magnitude of agreement is rather low as reflected in the low sensitivity of ECG criteria. As a result, the majority of cases with true anatomical LVH could be misclassified by using ECG criteria of LVH. Despite this limitation, it has been reported that the ECG criteria for LVH provide independent information on the cardiovascular risk even after adjusting for LVM. Understanding possible reasons for the frequent discrepancy between common ECG LVH criteria and LVH by echo or MRI would help understanding the genesis of ECG changes that occur as a consequence of increased LV mass.
Keywords: Electrocardiography, left ventricular hypertrophy, electrical remodeling.
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