Unknown Intracardiac Electrogram
Multiple Choice Questions
RBBB is best explained by:
This is the first of a new monthly series in the Journal called “Unknown Intracardiac Tracings.” The format is to show what I hope will be an interesting and challenging intracardiac tracing that the reader will evaluate and then answer the question accompanying the figure. Instead of simply showing the answer on the next page, the reader will be able to link to a video presentation in which I will discuss the tracing and the correct answer. For 30 years I have employed this method to teach interpretation of intracardiac electrograms, and found it both a fun and educational experience. I hope you will enjoy the tracings. The editors and publishers of JCE appreciate Medtronic's generous and enthusiastic support of this new section.