ECG Library


All ECG 131

  1. Normal sinus rhythm
  2. Isolated posterior wall hypertrophy

Without the clinical history this diagnosis is impossible to make based on the ECG alone. This ECG was from a patient with Duchenne's Muscular Dystrophy who had posterior wall hypertrophy confirmed on an echocardiogram. This is one of the causes of an R:S ratio > 1 in lead V1. Other causes of a large R wave in lead V1 include a right bundle branch block, WPW Type A, right ventricular hypertrophy and a posterior wall myocardial infarction.

Related Topic Reviews: Left Ventricular Hypertrophy