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.
These are two recording from a patient in her seventies who had a history of A/V nodal tachycardia which had been ablated 5 years previously. Four years after the ablation the patient developed syncope and was found to have Mobitz II A/V block on a Holter monitor. In spite of implantation of a pacemaker the patient continued to have syncope. The strips come from a Holter monitor done after the implantation of the pacemaker.
