This case report is kindly provided by Michael Rosengarten from McGill and is part of the McGill Cases. These cases come from the McGill EKG World Encyclopedia.
The recording shows sinus rhythm and a broad P wave in the inferior leads. The P wave is notched and the separation between the peaks is more than 40 ms. and the total p duration is more than 120 ms. This is suggestive of left atrial abnormality. The poor r wave progression in the precordial leads suggests a previous anterior wall myocardial infarction.
