Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content +++ ECG Findings ++ Rightward axis Dominant S wave in lateral leads (V5, V6, I, aVL) Dominant R wave in aVR, V1, V2, which may exceed the S-wave amplitude (especially in lead V1) T-wave inversions in relation to QRS complex +++ Pearls ++ Right ventricular hypertrophy (RVH) causes characteristic ECG changes as the predominant electrical signal of the left ventricle is overcome. Congenital heart disease, pulmonic or mitral stenosis, and pulmonary hypertension are common causes of RVH. As RVH persists, right atrial enlargement may occur as seen in the example (P-wave amplitude in V1 > 1.5 mm). ++ FIGURE 23.39A Right Ventricular Hypertrophy. (ECG contributor: James V. Ritchie, MD.) Graphic Jump LocationView Full Size||Download Slide (.ppt) ++ FIGURE 23.39B The R-wave amplitude exceeds the S-wave amplitude (arrows) in lead V1. In addition, the P-wave upward deflection exceeds 1.5 mm, indicating concomitant right atrial enlargement. Graphic Jump LocationView Full Size||Download Slide (.ppt) Your Access profile is currently affiliated with [InstitutionA] and is in the process of switching affiliations to [InstitutionB]. Please select how you would like to proceed. Keep the current affiliation with [InstitutionA] and continue with the Access profile sign in process Switch affiliation to [InstitutionB] and continue with the Access profile sign in process Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Error: Incorrect UserName or Password Username Error: Please enter User Name Password Error: Please enter Password Sign in Forgot Password? Forgot Username? Download the Access App: iOS | Android Sign in via OpenAthens Sign in via Shibboleth You already have access! Please proceed to your institution's subscription. Create a free profile for additional features.