Atrial Fibrillation Catheter Ablation Increases the Left Atrial Pressure

Je Wook Park, Hee Tae Yu, Tae Hoon Kim, Jae Sun Uhm, Boyoung Joung, Moon Hyoung Lee, Chun Hwang, Hui Nam Pak

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26 Citations (Scopus)


Background: We previously reported that a high left atrial (LA) pressure is associated with LA stiffness and poor rhythm outcomes after de novo catheter ablation of atrial fibrillation. Herein, we investigated whether radiofrequency catheter ablation generally changes the LA pressure among patients undergoing repeat procedures. Methods: Among 1848 patients who underwent atrial fibrillation catheter ablation, we measured the LA pressure during sinus rhythm in 1687 patients before the de novo ablation (59±11 years, 72.4% men, 72.8% paroxysmal atrial fibrillation) and in 142 with second procedures. We measured the LA pressure immediately after the transseptal puncture at the beginning of the procedure. Results: In the same 142 patients, the degree of LA stiffness, reflected by the LA pulse pressure (LApp), was significantly higher in the second procedure than in the de novo procedure (P<0.001). The degree of the LApp increase (ΔLApp) was significantly higher in patients who underwent additional extrapulmonary vein LA ablation than in those who underwent circumferential pulmonary vein isolation alone (P=0.010). Extrapulmonary vein LA ablation was independently associated with the ΔLApp (β=5.70 [0.12-11.27]; P=0.045). An increased LApp during repeat procedures was independently associated with a reduced diastolic function (β=2.01 [0.08-3.93]; P=0.041) without a worsening symptoms (EuroQol-five dimensions) score, 22.2±17.9 months after the de novo ablation. Conclusions: Atrial fibrillation catheter ablation, especially extrapulmonary vein LA ablation, increased the LA stiffness and was associated with a worsening postablation diastolic function. However, the symptom score did not significantly change.

Original languageEnglish
Article numbere007073
JournalCirculation: Arrhythmia and Electrophysiology
Issue number4
Publication statusPublished - 2019 Apr 1

Bibliographical note

Publisher Copyright:
© 2019 American Heart Association, Inc.

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)


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