Left atrial pressure as predictor for recurrence of atrial fibrillation after pulmonary vein isolation |
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Authors: | Markus Linhart Thorsten Lewalter Erica L Mittmann-Braun Nicole C Karbach René P Andrié Christoph Hammerstingl Rolf Fimmers Jens Kreuz Georg Nickenig Jan W Schrickel Lars M Lickfett |
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Institution: | 1. Medizinische Klinik und Poliklinik II, Universit?tsklinikum Bonn, Sigmund Freud-Str. 25, 53105, Bonn, Germany 2. Isar Herz Zentrum, Isar Kliniken GmbH, Sonnenstr. 24-26, 80331, Munich, Germany 3. Institut für Medizinische Biometrie, Informatik und Epidemiologie, Universit?tsklinikum Bonn, Sigmund Freud-Str. 25, 53105, Bonn, Germany
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Abstract: | Purpose Identification of reliable risk factors for recurrence of atrial fibrillation (AF) after pulmonary vein isolation (PVI) has important implications. Left atrial (LA) pressure is a largely observator-independent parameter that can easily be determined after transseptal puncture. The purpose of this study was to investigate the predictive value of LA pressure for AF recurrence after PVI. Methods Two hundred five consecutive patients with paroxysmal or persistent AF scheduled for first PVI were included. Baseline clinical data were collected. During PVI, LA pressure was determined invasively after transseptal puncture. PVI was performed with radiofrequency or cryoenergy, and patients were followed for 25?±?7 months. Results One hundred five (51 %) patients had AF recurrence. Patients with persistent AF prior to ablation had significantly more recurrences than patients with paroxysmal AF (70.1 vs. 42.0 %, p?<?0.001). Mean LA pressure was significantly higher in patients with recurrence of AF (13.4?±?7.1 vs. 11.0?±?5.2 mmHg, p?=?0.007), as was mean LA volume index (40.1?±?18.5 vs. 33.0?±?11.2 mL/m2, p?<?0.001). In the multivariate analysis, mean LA pressure was predictive in patients with normal or mildly enlarged LA, while AF type was not predictive. For each 1-mmHg increase in LA pressure, the risk of AF recurrence increased by 11 % in this subgroup. In patients with moderately or severely enlarged LA, AF type was predictive whereas LA pressure was not. Conclusion LA pressure, AF type, and LA volume index are independent predictors for recurrence of AF after PVI. LA pressure may be helpful especially in patients with small atria, where AF type is not predictive. |
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