Geoffrey Lee

Reply to the Editor-Investigating sinoatrial node activation during sinus rhythm using phase mapping

Ramanathan Parameswaran, Geoffrey Lee, Jonathan M Kalman

Journal article  |  2021  |  HEART RHYTHM

Renal Denervation for the Management of Refractory Ventricular Arrhythmias A Systematic Review

Joshua Hawson, Jason A Harmer, Mitchell Cowan, Sohaib Virk, Timothy Campbell, Richard G Bennett, Robert D Anderson, Jonathan Kalman, Geoffrey Lee, Saurabh Kumar

Journal article  |  2021  |  JACC-CLINICAL ELECTROPHYSIOLOGY

OBJECTIVES: The authors performed a systematic review and meta-analysis to determine the efficacy of renal denervation (RDN) in pa..

Simultaneous epicardial-endocardial mapping of the sinus node in humans with structural heart disease: Impact of overdrive suppression on sinoatrial exits

Ramanathan Parameswaran, Geoffrey Lee, Gwilym M Morris, Alistair Royse, John Goldblatt, Marco Larobina, Troy Watts, Chrishan J Nalliah, Geoffrey Wong, Ahmed M Al-Kaisey, Robert D Anderson, Aleksandr Voskoboinik, Hariharan Sugumar, David Chieng, Prashanthan Sanders, Peter M Kistler, Jonathan M Kalman

Journal article  |  2020  |  HEART RHYTHM

BACKGROUND: The 3-dimensional (3D) nature of sinoatrial node (SAN) function has not been characterized in the intact human heart. ..

Genetic Susceptibility to Atrial Fibrillation Is Associated With Atrial Electrical Remodeling and Adverse Post-Ablation Outcome

Geoffrey R Wong, Chrishan J Nalliah, Geoffrey Lee, Aleksandr Voskoboinik, Sandeep Prabhu, Ramanathan Parameswaran, Hariharan Sugumar, Robert D Anderson, Liang-Han Ling, Alex McLellan, Renee Johnson, Prashanthan Sanders, Peter M Kistler, Diane Fatkin, Jonathan M Kalman

Journal article  |  2020  |  JACC-CLINICAL ELECTROPHYSIOLOGY

Objectives This study sought to assess the atrial electrophysiological properties and post-ablation outcomes in patients with atri..

Modified Precordial Lead R-Wave Deflection Interval Predicts Left- and Right-Sided Idiopathic Outflow Tract Ventricular Arrhythmias

Robert D Anderson, Saurabh Kumar, Simon Binny, Mukund Prabhu, Ahmed Al-Kaisey, Ramanathan Parameswaran, Hariharan Sugumar, David Chieng, Joshua Hawson, Timothy Campbell, Subodh Joshi, Elaine Lui, Paul B Sparks, Stephen A Joseph, Joseph B Morton, Alex McLellan, Jonathan Lipton, Bhupesh Pathik, Peter M Kistler, Jonathan Kalman, et al.

Journal article  |  2020  |  JACC-CLINICAL ELECTROPHYSIOLOGY

OBJECTIVES: This study evaluated if modifying electrocardiographic (ECG) precordial leads to a higher intercostal position improve..

Epicardial Adipose Tissue Accumulation Confers Atrial Conduction Abnormality

Chrishan J Nalliah, James R Bell, Antonia JA Raaijmakers, Helen M Waddell, Simon P Wells, Gabriel B Bernasochi, Magdalene K Montgomery, Simon Binny, Troy Watts, Subodh B Joshi, Elaine Lui, Choon Boon Sim, Marco Larobina, Michael O'Keefe, John Goldblatt, Alistair Royse, Geoffrey Lee, Enzo R Porrello, Matthew J Watt, Peter M Kistler, et al.

Journal article  |  2020  |  JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY

BACKGROUND: Clinical studies have reported that epicardial adipose tissue (EpAT) accumulation associates with the progression of a..

Scar nonexcitability using simultaneous pacing for substrate ablation of ventricular tachycardia

Robert D Anderson, Geoffrey Lee, Timothy Campbell, Richard G Bennett, Eddy Kizana, Troy Watts, Jonathan Kalman, Saurabh Kumar

Journal article  |  2020  |  PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY

OBJECTIVES: To describe an expedited strategy of simultaneous high-output pacing during radiofrequency ablation to achieve scar ho..

Endocardial-Epicardial Phase Mapping of Prolonged Persistent Atrial Fibrillation Recordings High Prevalence of Dissociated Activation Patterns

Ramanathan Parameswaran, Jonathan M Kalman, Alistair Royse, John Goldblatt, Marco Larobina, Troy Watts, Tomos E Walters, Chrishan J Nalliah, Geoffrey Wong, Ahmed Al-Kaisey, Robert Douglas Anderson, Aleksandr Voskoboinik, Hariharan Sugumar, David Chieng, Prashanthan Sanders, Peter M Kistler, Edward P Gerstenfeld, Geoffrey Lee

Journal article  |  2020  |  CIRCULATION-ARRHYTHMIA AND ELECTROPHYSIOLOGY

BACKGROUND: Endocardial-epicardial dissociation and focal breakthroughs in humans with atrial fibrillation (AF) have been recently..

Multipolar mapping with the high-density grid catheter compared with conventional point-by-point mapping to guide catheter ablation for focal arrhythmias

David Chieng, Anandaroop Lahiri, Hariharan Sugumar, Ahmed Al-Kaisey, Ramanathan Parameswaran, Robert D Anderson, Sandeep Prabhu, Liang-Han Ling, Joseph B Morton, Alex J McLellan, Geoffrey Lee, Jonathan M Kalman, Andrew D McGavigan, Peter M Kistler

Journal article  |  2020  |  JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY

BACKGROUND: Multipolar catheters provide high-density mapping which may reduce the procedural duration and improve the success of ..

Site-Specific Epicardium-to-Endocardium Dissociation of Electrical Activation in a Swine Model of Atrial Fibrillation

Tomos E Walters, Geoffrey Lee, Adam Lee, Richard Sievers, Jonathan M Kalman, Edward P Gerstenfeld

Journal article  |  2020  |  JACC-CLINICAL ELECTROPHYSIOLOGY

OBJECTIVES: This study sought to define the extent and spatial distribution of endocardial-epicardial dissociation (EED) in a swin..