Which EKG feature is commonly seen in left ventricular hypertrophy?

In the context of left ventricular hypertrophy (LVH), both prominent S waves in lead V1 and high amplitude QRS complexes in leads V5 and V6 are significant features that can indicate the presence of this condition.

Prominent S waves in lead V1 are indicative of increased left ventricular mass. This occurs because the thickening of the left ventricular walls can affect the electrical activity as it generates a more substantial S wave due to the increased muscle mass between the heart and lead V1.

High amplitude QRS complexes in leads V5 and V6 reflect the same phenomenon from a different perspective. These leads are positioned laterally over the left ventricle, and as the left ventricular wall thickens, the QRS complexes become taller and more pronounced. This increase in amplitude is a direct manifestation of the increased myocardial mass and electrical activity associated with hypertrophy.

Thus, the presence of both of these features in an EKG is commonly associated with left ventricular hypertrophy, making the combination in the selected answer a key indicator of LVH. Understanding these specific EKG changes is crucial for accurately identifying heart conditions and guiding clinical management.