Echocardiographic thickness of right ventricular anterior wall.

To the Editor: I read with interest the recent article, "Differentiation of Posterior Myocardial Infarction from Right Ventricular Hypertrophy and Normal Anterior Loop by Echocardiography.'" I agree with Kramer et al. that an echocardiographic measurement of the right ventricular anterior wall (RVAW) thickness is useful in differentiating posterior myocardial infarction from right ventricular hypertrophy and normal anterior loop; but the RVAW thickness of their patients with posterior myocardial infarction and subjects with normal anterior loop is thicker than we have found