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P Wave Polarities of an Arrhythmogenic Focus in Patients with Paroxysmal Atrial Fibrillation Originating from Superior Vena Cava or Right Superior Pulmonary Vein by JEN‐YUAN KUO; CHING‐TAI TAI; HSUAN‐MING TSAO; MING‐HSIUNG HSIEH; CHIN‐FENG TSAI; WEI‐SHIANG LIN; YUNG‐KUO LIN; YU‐AN DING; CHARLES JIA‐YIN HOU; CHENG‐HO TSAI; SHIH‐ANN CHEN is a Medicine article available to read on EtoBox.
What is P Wave Polarities of an Arrhythmogenic Focus in Patients with Paroxysmal Atrial Fibrillation Originating from Superior Vena Cava or Right Superior Pulmonary Vein about?
**__Introduction:__ The superior vena cava (SVC) and right superior pulmonary vein (RSPV) are anatomically close structures. Using 12‐lead ECG may facilitate identification of ectopic foci from SVC or RSPV. The aim of this study was to assess whether P wave polarity on surface ECG is helpful in distinguishing an arrhythmogenic focus of paroxysmal atrial fibrillation (AF) from SVC or RSPV.** **__Methods and Results:__ Thirty‐four patients with paroxysmal AF from the SVC (group I: 17 patients, 10 men and 7 women; mean age** **57 ± 12 years** **) or RSPV (group II: 17 patients, 15 men and 2 women, mean age** **62 ± 14 years** **) underwent electrophysiologic study and radiofrequency (RF) catheter ablation. All of the AF foci were confirmed by successful ablation. P wave polarities on surface ECG inferior leads were positive during sinus rhythm and ectopic beats in both groups. Leads I, aVR, aVL, and V~1~ were further analyzed. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) in predicting an arrhythmogenic focus of AF from SVC or RSPV were provided. P wave polarity in lead aVR was negative in all 34 patients. P wave polarity in lead V~1~ w
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- Author
- JEN‐YUAN KUO; CHING‐TAI TAI; HSUAN‐MING TSAO; MING‐HSIUNG HSIEH; CHIN‐FENG TSAI; WEI‐SHIANG LIN; YUNG‐KUO LIN; YU‐AN DING; CHARLES JIA‐YIN HOU; CHENG‐HO TSAI; SHIH‐ANN CHEN
- Publisher
- John Wiley and Sons; Wiley (Blackwell Publishing); Futura Publishing Company, Inc; Blackwell Publishing Inc.; Wiley (ISSN 1540-8167)
- Published
- 2003
- Language
- EN
- Field
- Medicine (Health Sciences)