McGill Case 257

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. Previous Case: McGill Case 256 | Next Case: McGill Case 258

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.