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ISCE 2008 Session III

New and Neglected Aspects of the QRS

Session Chair
Rory W. Childers
University of Chicago
Chicago IL USA

Session Co-chair
Robert Farrell
GE Healthcare
Wauwatosa WI USA

The measured or measurable parameters in the standard 12 lead electrocardiogram include QRS duration, heart rate and QRS amplitude. There has been no concerted effort to establish any dynamic relationship between these numeric values in consecutive tracings of patients. There is a paucity of papers relating the relationship of such measurements to diagnosis and outcome. Considering these two aspects, we will confront directly the dynamic relationship of a) heart rate, b) papillary muscle geography, c) the summed QRS amplitude (be it greatly reduced, or conversely, increased by hypertrophy) to changes in QRS duration.

Time	Speaker/Topic
1900 - 1905	Rory W. Childers, University of Chicago, Chicago IL USA Overview
1905 - 1935	Galen Wagner, Duke University Medical Center, Durham NC USA The Relationship between the Endocardial Sites of Origin of the Mitral Papillary Muscles and the QRS Complex Morphology
1935 - 2005	Peter Okin, Weill Medical College of Cornell University, New York NY USA The QRS Duration in Left Ventricular Hypertrophy: Its Value in Outcome Predictions
2015 - 2045	Marek Malik, St. Georges Hospital Medical School, London UK The QRS Duration and Heart Rate
2045 - 2115	John Madias, Mt. Sinai School of Medicine, Elmhurst NY USA Low Voltage and Its Causes
2115 - 2145	Rory W. Childers, University of Chicago, Chicago IL USA The Excessively Brief QRS Duration: Features of a Large Data Set

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