Tp-e interval and Tp-e/JT ratio before and after catheter ablation in patients with Wolff Parkinson White syndrome

Abstract

Aim: Tp-e and Tp-e/QT are novel markers of ventricular repolarization. However, preexcitation in Wolff Parkinson White (WPW) syndrome may preclude accurate measurement of repolarization as assessed by the QT. We aimed to research the assessment of Tp-e and Tp-e/JT before and after ablation in WPW. Material and Method: We enrolled 50 consecutive patients with symptomatic WPW syndrome who underwent catheter ablation of their accessory pathways for treatment. All of the patients were successfully ablated. ECGs were performed before the procedure and repeated after the ablation procedure. Results: Tp-e (86.6±16.2 vs 80.6±12.5; p=0.021) and Tp-e(c) (96.7±18.9 vs 88.3±11.2; p=0,005) showed a significant decrease after the procedure. Tp-e/JT (0.307±0.053 vs 0.279±0.040; p=0.001) and Tp-e/JT(c) (0.276±0.048 vs 0.255±0.045; p=0.009) showed a significant decrease after the procedure. There was a significant association between ERP and before procedure Tp-e (c) (r=- 0.370, p=0.008) and Tp-e/JT (r=- 0.371, p=0.008). Conclusion: This study demonstrated that Tp-e and Tp-e/JT were significantly diminished in WPW after the ablation.

Keywords

• Catheter ablation
• JT interval
• Tp-e interval
• Tp-e/JT ratio
• Wolff Parkinson White Syndrome

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