What may indicate the presence of ventricular hypertrophy on an EKG?

The presence of ventricular hypertrophy can be indicated by an increase in the amplitude of R waves observed on an EKG. This increase occurs because as the ventricular muscle becomes thicker due to hypertrophy, it generates stronger electrical signals during depolarization. The left ventricular hypertrophy, for example, often shows significant increases in the R wave amplitude in specific leads, particularly the left precordial leads (V5 and V6), and can also have corresponding changes in the S waves in other leads.

Other potential indicators of left ventricular hypertrophy include changes in the S wave amplitude or the presence of specific patterns such as the "strain" pattern in the T waves. However, the key indicator among the options provided is the increased amplitude of R waves. The other choices, while they may indicate other types of cardiac conditions or abnormalities, do not directly correlate with ventricular hypertrophy.