Journal article

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 Show all



OBJECTIVES: This study evaluated if modifying electrocardiographic (ECG) precordial leads to a higher intercostal position improved the accuracy of outflow tract ventricular arrhythmia (OTVA) localization. BACKGROUND: Precordial ECG prediction algorithms that use a standard lead configuration localize OTVA with variable accuracy. METHODS: Patients who underwent OTVA ablation were prospectively enrolled to have a standard and modified (high) precordial ECG. R- and S-wave amplitudes and intervals were measured to develop an algorithm that differentiated the right ventricular outflow tract (RVOT) and the left ventricular outflow tract (LVOT) with high accuracy-the modified lead R-wave deflectio..

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