An Abnormal Electrocardiogram Following Pacemaker Implantation: Red Flag
or Red Herring?
AbstractAn 88-year-old man underwent a dual chamber pacemaker implantation for
complete heart block. Post procedure 12-lead electrocardiogram showed
some abnormal findings. The reader is challenged to identify the
abnormalities and then explain the mechanism of these findings. The
discussion then guides the reader with the explanation.