P-Wave Morphology in Focal Atrial Tachycardia: An Updated Algorithm to Predict Site of Origin.
Peter M Kistler, David Chieng, Ivaylo R Tonchev, Hariharan Sugumar, Aleksandr Voskoboinik, Lorin A Schwartz, Alex J McLellan, Sandeep Prabhu, Liang-Han Ling, Ahmed Al-Kaisey, Ramanathan Parameswaran, Robert D Anderson, Geoffrey Lee, Jonathan M Kalman
JACC Clin Electrophysiol | Published : 2021
OBJECTIVES: This study sought to report P-wave morphology (PWM) from a series of paraseptal (PS) atrial tachycardia (AT), revise then prospectively evaluate a simplified PWM algorithm against a contemporary consecutive cohort with focal AT. BACKGROUND: The 2006 PWM algorithm was useful in predicting the origin of focal AT. An updated algorithm was developed given advances in multipolar 3-dimensional mapping, potential limitations of PWM in separating PS sites, and a renewed interest in the P-wave in mapping non-pulmonary vein triggers. METHODS: The PWM from a consecutive series of 67 patients with PS AT were analyzed. PS sites included were coronary sinus ostium, perinodal, left and right se..View full abstract