Oral and Poster Abstract Sessions

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Innovators Abstracts Session
The  Heart  Rhythm  Society  introduced  an  exciting  new  abstract  category  this  year  to  allow  innovative physicians and scientists to share new and novel approaches, techniques, and technologies.  Rather than looking for the completed results of scientific studies, these abstracts are based on their originality and scientific and clinical promise.

Innovators Poster Sessions will be presented on Thursday, May 5 and Friday, May 6 in the Esplanade Foyer (Moscone South building). Posters will be on display from 9:00 a.m. to 5:00 p.m. Presenters will be available at their poster from 9:30 -10:30 a.m. and 3:15 – 4:15 p.m.

Featured Poster Session and Reception
The Featured Poster Session and Reception is a collection of the highest scoring abstracts of those selected for poster presentations. The session includes complimentary food and beverages and will take place Wednesday, May 4, 5:45 – 7:00 p.m. in Moscone West building.

Heart Rhythm 2011 registrants may attend the Featured Poster Session and Reception at no cost, but a complimentary ticket is required to attend. When registration opens, please select the appropriate ticket, or you may update your registration online to add ticketed functions after your initial registration.

Moderated Poster Sessions
Each moderated poster presentation will be 15 minutes in length, led by the Presenting Author and will include comments from an Expert Moderator. The moderated poster sessions will be presented in the "poster theater" section of poster town. Moderated Posters are selected as part of the abstract review process.

This session will investigate new mapping strategies and new ablation techniques for SVT ablation

Thursday, May 5
Chair: Amin Al-Ahmad, MD, Stanford University Medical Center in Stanford, Calif.

Presentations:
Thursday, May 5, 3:15 PM - 3:25 PM
Direct Visualization of the Slow Pathway Using Voltage Gradient Mapping: A Novel Approach for Successful Ablation of AV Nodal Reentry Tachycardia
Steven J. Bailin, MD, and Craig Hoffman, PA, Iowa Heart Center in Des Moines, Iowa

Thursday, May 5, 3:25 PM - 3:35 PM
Integrated Real Time Ultrasound Lesion Monitoring and RF Ablation: Predicting Steam Pops
Matthew J. Wright, MBBS, PhD, Erik Harks, PhD, Szabolcs Deladi, PhD, Fei Zuo, PhD, Steven Fokkenrood, Esq., Mélèze Hocini, MD, Sébastien Knecht, MD, Frédéric Sacher, MD, Michel Haïssaguerre, MD and Pierre Jaïs, MD, Kings College London BHF Centre, cardiovascular division, NIHR Biomedical Research Centre, London, Philips Research, Minimally Invasive Healthcare, Eindhoven, Netherlands, Hôpital Cardiologique du Haut-Lévêque in Bordeaux-Pessac, France

Thursday, May 5, 3:35 PM - 3:45 PM
Novel Use of Atrial Overdrive Pacing to Rapidly Differentiate Junctional Tachycardia from Atrioventricular Nodal Reentrant Tachycardia
Jonathan G. Tardos, MD, Ibrahim Almasry, MD, Saverio Barbera, MD, Eric Rashba, MD, Sei Iwai, MD, and Roger Fan, MD, Stony Brook University Medical Center in Stony Brook, N.Y.

Thursday, May 5, 3:45 PM - 3:55 PM
Electrophysiological Indicators Versus Visual Assessment of RF Efficacy During In Vivo Ventricular Ablation
Frederic Sacher, MD, Bryan Wylie, No Degree, Amir Jadidi, MD, Zach Malchano, PhD, Daniel Scherr, MD, Leslie Oley, No Degree, Nicolas Derval, MD, Sebastien Knecht, MD, Meleze Hocini, MD, Pierre Dos Santos, MD, PhD, Michel Haissaguerre, MD, Dave Robinson, No Degree and Pierre Jais, MD. Hopital Cardiologique du Haut Leveque / Universite Bordeaux 2, Bordeaux, France, Voyage Medical, Inc, Redwood City, CA, Hopital Cardiologique du Haut Leveque, Bordeaux, France

Thursday, May 5, 3:55 PM - 4:15 PM
Correlations Between Long-term Results After Cryoablation For AVNRT And A Residual Jump Associated Or Not With A Single Echo
Antonio De Sisti, MD, Joelci Tonet, MD, Fatima Gueffaf, MD, Philip Aouate, MD, Faouzi Touil, MD and Francoise Hidden-Lucet, MD. Cardiology Institute, Rhythmology Unit, Pitié-Salpêtrière Hospital, Paris, France

Friday, May 6
Chair: Claudio D. Schuger, MD. Henry Ford Hospital, Detroit

Presentations:
Friday, May 6, 9:30 AM - 9:40 AM
Increased Risk of Heart Failure and Death after ICD shock in ICD and CRT-D patients in the MADIT-CRT Trial
John C. Evans, MD, Paul J. Wang, MD, Scott McNitt, MS, Arthur J. Moss, MD, Wojciech Zareba, MD, PhD and Amin Al-Ahmad, MD. Stanford, Palo Alto, CA, University of Rochester, Rochester, NY

Friday, May 6, 9:40 AM - 9:50 AM
Prospective Evaluation of a Novel ICD Algorithm using Right Ventricular Pressure
Stephen A. Fahrig, MD, Arun N. Kumar, PhD, W. Ben Johnson, MD, Paul A. Friedman, MD, Robert H. Hoyt, MD, Nicole M. Wood, BS and Teresa A. Whitman, PhD. Saint Thomas Hospital, Nashville, TN, Medtronic Inc, Mounds View, MN, Iowa Heart Center, West Des Moines, IA, Mayo Clinic, Rochester, MN

Friday, May 6, 9:50 AM -10:00 AM
A Randomized-Controlled Pilot Study Comparing ICD Implantation with and without Intra-Operative Defibrillation Testing in Patients with Heart Failure and Severe Left Ventricular Dysfunction: A Sub-Study of the RAFT Trial
Jeffrey S. Healey, MD, Lorne J. Gula, MD, David H. Birnie, MD, Lawrence D. Sterns, MD, John Sapp, MD, Eugene Crystal, MD, Chris Simpson, MD, Derek V. Exner, MD, Bernard Thibault, MD, Francois Philippon, MD, George A. Wells, MD and Anthony SL. Tang, MD. Hamilton Health Sciences, Hamilton, Ontario, University of Western Ontario, London, Ontario, University of Ottawa, Ottawa, Ontario, Royal Jubilee Hospital, Victoria, British Columbia, Dalhousie University, Halifax, Nova Scotia, Sunnybrook Health Sciences Centre in Toronto, Queen's University, Kingston, Onatario, University of Calgary in Calgary, Alberta, Montreal Heart Institute, Montreal, Universite Laval, Quebec City, University of Ottawa Heart Institute, Ottawa, Ontario

Friday, May 6, 10:00 AM -10:10 AM
The Extent Of LV Scar Quantified By Late Gadolinium Enhancement MRI Is Associated With Spontaneous Ventricular Arrhythmias In ICD Recipients
Paul A. Scott, MBChB, John Morgan, MD, FRCP, Nicola Carroll, BSc, David Murday, MBBS, Paul Roberts, MD, Charles Peebles, MBBS, Stephen Harden, MBBS, and Nick Curzen, PhD, FRCP. Wessex Cardiothoracic Unit, Southampton, England

Friday, May 6,10:10 AM -10:20 AM
Intracardiac T-wave Alternans Predicts Imminent Ventricular Tachyarrhythmias in ICD Patients
Charles Swerdlow, MD, Theodore Chow, MD, Mithilesh K. Das, MD, Anne Gillis, MD, Xiaohong Zhou, MD, Athula I. Abeyratne, PhD, and Raja N. Ghanem, PhD. Cedars-Sinai Medical Center in Los Angeles, Heart & Vascular Associates in San Jose, Calif., Methodist Hospital, Indianapolis, University of Calgary, Calgary, Alberta, Medtronic in Minneapolis.

Friday, May 5, 3:15-4:15pm
Chair: Glenn I. Fishman, MD, New York University, New York City

Presentations:
Friday, May 6, 3:15 PM - 3:25 PM
Cardiac Optogenetics: Validation of a Cell Delivery System for Control of Cardiac Function by Light
Emilia Entcheva, PhD, Zhiheng Jia, MSc, Virgilijus Valiunas, PhD, Hong-Zhang Wang, PhD, ZhongJu Lu, PhD, Huilin Liu, MSc, Harold Bien, MD, PhD, Barbara Rosati, PhD, Peter R.. Brink, PhD and Ira S.. Cohen, MD, PhD. SUNY - Stony Brook in Stony Brook, N.Y.

Friday, May 6, 3:25 PM - 3:35 PM
Optical Pacing Of The Adult Rabbit Heart
Michael W. Jenkins, PhD, Yves T. Wang, BS, Michiko Watanabe, PhD, Yuanna Cheng, MD, PhD, and Andrew M. Rollins, PhD, Case Western Reserve University in Cleveland and Cleveland Clinic

Friday, May 6, 3:35 PM - 3:45 PM
Action Potential Propagation In Human Monolayers Made From Induced Pluripotent Stem Cell Derived Cardiomyocytes
Luqia Hou, MS, Matt Klos, PhD, Alexandra Bizy, MS, Guadalupe Guerrero-Serna, PhD, Jianhua Zhang, PhD, Timothy Kamp, MD, PhD, Jose Jalife, MD, and Todd Herron, PhD, University of Michigan in Ann Arbor, Mich., University of Wisconsin Medical School inMadison, Wis.

Friday, May 6, 3:45 PM - 3:55 PM
Chronic Low-Level Vagus Nerve Stimulation Reduces Paroxysmal Atrial Tachyarrhythmias in Ambulatory Canines by Inducing Structural and Functional Remodeling of the Left Stellate Ganglion
Mark J. Shen, MD, Tetsuji Shinohara, MD, PhD, Hyung-Wook Park, MD, PhD, Kyle Frick, BS, Daniel S. Ice, MD, Eue-Keun Choi, MD, PhD, Seongwook Han, MD, PhD, Rahul Sharma, BS, Changyu Shen, PhD, Michael Fishbein, MD, Lan S. Chen, MD, Douglas P. Zipes, MD, Shien-Fong Lin, PhD, and Peng-Sheng Chen, MD, Krannert Institute of Cardiology, Indianapolis, division of biostatistics, Indiana University in Indianapolis, department of pathology and laboratory medicine, David Geffen School of Medicine, UCLA, Los Angeles, department of neurology in Indianapolis

Friday, May 6, 3:55 PM - 4:15 PM
Optical Imaging of Intramural Spread of Electrical Activation
Richard D. Walton, PhD, Christopher D. Lawrence Xavier, MSc, and Olivier Bernus, PhD. University of Leeds in Leeds, England

Saturday, May 7

Chair: Eric M. Grubman, MD, CCDS, Cardiology Associates of New Haven in New Haven, Conn.

Presentations:
Saturday, May 7, 9:30 AM - 9:40 AM
The Temporal Relationship of Atrial Tachyarrhythmias and Thromboemboli Based on Stored Device Data: A Subgroup Analysis of TRENDS
Emile G. Daoud, MD, Taya V. Glotzer, MD, D. George Wyse, MD, PhD, Michael D. Ezekowitz, MD, PhD and Paul Ziegler, BS. Ohio State University, Columbus, OH, Hackensack University Medical Center, Hackensack, NJ, Libin Cardiovascular Institute of Alberta, Calgary, AB, Canada, Lankenau Institute for Medical Research, Philadelphia, PA, Medtronic Inc., Minneapolis, MN

Saturday, May 7, 9:40 AM - 9:50 AM
Thromboembolic Risk Evaluation In Patients With Atrial Fibrillation Using A Modified CHADS2 Scoring System
Myung-jin Cha, MD, Gyu-chul Oh, MD, Seokyung Hahn, PhD, Eue-Keun Choi, MD, PhD, and Seil Oh, MD, PhD, department of internal medicine, Seoul National University Hospital, Seoul, Korea, Republic of, Medical Research Collaborating Center, Seoul National University Hospital, Seoul, South Korea

Saturday, May 7, 9:50 AM -10:00 AM
Incidence of Asymptomatic Embolic Events Following Pulmonary Vein Isolation Procedures: Comparison Between Different Ablation Devices
Claudia Herrera Siklody, MD, Thomas Deneke, MD, Mélèze Hocini, MD, Heiko Lehrmann, MD, Dong-In Shin, MD, Shinsuke Miyazaki, MD, Susanne Henschke, MD, Jochen Schiebeling-Roemer, MD, Michel Haissaguerre, MD, and Thomas Arentz, MD, Herz Zentrum Bad Krozingen, Bad Krozingen, Germany, Krankenhaus Porz am Rhein in Cologne, Germany, Hopital Cardiologique du Haut-Lévèque, Bordeaux-Pessac, France

Saturday, May 7, 10:00 AM -10:10 AM
Risk of Stroke after Atrial Fibrillation Ablation: AF Burden versus CHADS2 Score in Patients with Oral Anticoagulant Use Guided by ECG Monitoring and Pulse Assessment
Michael P. Riley, MD, PhD, Erica Zado, PA, Kurt Schillinger, MD, PhD, Marc Deyell, MD, Edward P. Gerstenfeld, MD, David J. Callans, MD, Mathew Hutchinson, MD, David Lin, MD, Joshua Cooper, MD, Ralph Verdino, MD, Rupa Bala, MD, Fermin Garcia, MD, Wendy Tzou, MD, and Francis E. Marchlinski, MD, Hospital of the University of Pennsylvania in Philadelphia

Saturday, May 7, 10:10 AM -10:20 AM
Successful Catheter Ablation of Atrial Fibrillation Reduced the Risk of Cardiovascular Events Beyond the Conventional CHADS2 in Atrial Fibrillation Patients At High Risk
Yenn-Jiang Lin, MD, Shih-Lin Chang, MD, Li-Wei Lo, MD, Yu-Feng Hu, MD, Ta-Chuan Tuan, MD, Ching-Tai Tai, MD, Kazuyoshi Suenari, MD, Cheng-Hung Li, MD, Tzu-Fan Chao, MD and Shih-Ann Chen, MD, Taipei Veterans General Hospital in Taipei, Taiwan