Journals / Eskisehir Medical Journal / 2026 / Volume: 7 Issue: 2

P-wave terminal force in lead V1-Morris Index After Catheter Ablation: A Study in Atrial Fibrillation and Typical Atrial Flutter Patients

V1 Derivasyonunda P Dalga Terminal Kuvveti–Morris İndeksi: Atrial Fibrilasyon ve Tipik Atriyal Flutter Hastalarında Kateter Ablasyonu Sonrası Değişimlerin İncelenmesi

Gamze Yeter Arslan(KEPEZ DEVLET HASTANESİ)0000-0002-0114-7448
Serdar Söner(UNIVERSITY OF HEALTH SCIENCES, DİYARBAKIR GAZİ YAŞARGİL HEALTH RESEARCH CENTER, DEPARTMENT OF INTERNAL MEDICINE, DEPARTMENT OF CARDIOLOGY)0000-0002-2807-6424
Pages
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Publication Date
2026-03-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Its role in CTI ablation is limited.

📌 3 Key Takeaways

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Objective & Hypothesis:Introduction: P-wave terminal force in lead V1 (PTFV1, Morris Index) is a marker of atrial remodeling.
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Key Findings & Data:Methods: A total of 120 AF patients (46% persistent, 54% paroxysmal) and 58 CTI patients were analyzed.
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Conclusion & Impact:Its role in CTI ablation is limited.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Atrial fibrillation · Atrial Remodelling · Morris index

Abstract

Introduction: P-wave terminal force in lead V1 (PTFV1, Morris Index) is a marker of atrial remodeling. We evaluated its role three months after atrial fibrillation (AF) or cavotricuspid isthmus (CTI) ablation. Methods: A total of 120 AF patients (46% persistent, 54% paroxysmal) and 58 CTI patients were analyzed. PTFV1 was measured pre-ablation and at three months. Abnormal PTFV1 was defined as ≥|0.04| mV·s. Patients were followed for 12 months. Endpoints were AF/AT recurrence in the AF cohort and new AF in the CTI cohort. Results: In the AF cohort, recurrence occurred in 31%. Abnormal 3-month PTFV1 predicted higher recurrence (46% vs. 21%; HR 2.05, 95% CI 1.22–3.46). Addition of PTFV1 improved AUC from 0.67 to 0.76. In the CTI cohort, new AF occurred in 15%, but abnormal PTFV1 was not predictive (OR 1.8, 95% CI 0.8–4.2). Lead II P-wave duration was significant. Conclusion: Three-month PTFV1 is a robust predictor of AF recurrence after ablation. Its role in CTI ablation is limited.

Özet

Giriş: V1 derivasyonunda P-dalgası terminal kuvveti (PTFV1, Morris İndeksi), atriyal yeniden şekillenmenin bir belirtecidir. Bu çalışmada, atriyal fibrilasyon (AF) veya kavotriküspit istmus (CTI) ablasyonundan üç ay sonra PTFV1’in rolünü değerlendirdik. Yöntemler: Toplam 120 AF hastası (%46 persistan, %54 paroksismal) ve 58 CTI hastası analiz edildi. PTFV1 ablasyon öncesi ve üç ay sonrasında ölçüldü. Anormal PTFV1, ≥|0.04| mV·s olarak tanımlandı. Hastalar 12 ay boyunca takip edildi. Sonlanım noktaları, AF kohortunda AF/AT rekürrensi ve CTI kohortunda yeni AF gelişimiydi. Bulgular: AF kohortunda rekürrens %31 oranında görüldü. Üçüncü ayda anormal PTFV1, daha yüksek rekürrens ile ilişkiliydi (%46’ya karşı %21; HR 2.05, %95 GA 1.22–3.46). PTFV1’in eklenmesi AUC değerini 0.67’den 0.76’ya yükseltti. CTI kohortunda yeni AF gelişimi %15 idi, ancak anormal PTFV1 prediktif değildi (OR 1.8, %95 GA 0.8–4.2). DII derivasyonundaki P-dalgası süresi anlamlı bulundu. Sonuç: Üçüncü ay PTFV1 değeri, ablasyon sonrası AF rekürrensinin güçlü bir öngördürücüsüdür. CTI ablasyonu sonrası yeni AF gelişimi için PTFV1’in rolü sınırlıdır.

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Cite This Article

Arslan, G. Y., Söner, S. (2026). P-wave terminal force in lead V1-Morris Index After Catheter Ablation: A Study in Atrial Fibrillation and Typical Atrial Flutter Patients. Eskisehir Medical Journal, Volume: 7 Issue: 2. https://ajindex.com/articles/1614191

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