How can RV infarction be diagnosed using EKG?

The diagnosis of right ventricular (RV) infarction using an EKG is characterized by specific patterns that indicate the presence of ischemia in the right heart. In particular, the correct choice highlights the presence of elevation in leads V1 (which observes the right ventricle) and III (which reflects inferior wall activity). The greater elevation in lead III compared to lead II is significant as it suggests the involvement of the inferior wall and can indicate RV infarction when associated with inferior wall myocardial infarction.

Leads V1 and III are crucial in diagnosing this condition because lead V1 captures the right ventricle directly, while lead III reflects inferior wall changes. The criteria of having elevation specifically in lead III greater than lead II is pivotal since it supports the diagnosis by indicating a supply issue from the right coronary artery, which supplies the inferior wall along with the right ventricle.

Other choices do not align with the diagnostic criteria for RV infarction. For instance, changes in lead V5 or flat T waves do not support a diagnosis of RV involvement in the way that the specified elevations in leads III and V1 do. Regular R-R intervals would not indicate any ischemic changes and do not pertain to the diagnosis of RV infarction. Thus