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.
This is a recording from a patient in the pacemaker clinic. The patient has a dual chamber pacemaker set at 30/min. The top line is the atrial track of the ladder diagram and the next is the track of the ventricular lead. The bottom lead is a surface recording.