Lower pulmonary vein-to-left atrium volume ratio predicts poor rhythm outcome after atrial fibrillation catheter ablation

Figures

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  FIGURE 1. Comparisons of the variables according to the recurrence of AF at 1-year after the AFCA among the tertile groups of LA dimension. Comparisons of the LA dimension (A), CT-measured LA volume (B), mean LA voltage (C), and PV/LA%vol (D). AF, atrial fibrillation; AFCA, atrial fibrillation catheter ablation; CT, computed tomography; LA, left atrium or left atrial; PV, pulmonary vein; PV/LA%vol, pulmonary vein to left atrium volume percent ratio.

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  FIGURE 2. The Kaplan-Meier curve for clinical recurrence of AF according to the tertile groups of PV/LA%vol and presence of the PITX2 gene. (A) The AF recurrence rate was significantly higher in the lowest tertile PV/LA%vol group (Log-rank p = 0.004). (B) However, AF recurrence did not differ according to the presence of an SNP in the PITX2 gene (Log-rank p = 0.368). AF, atrial fibrillation; PV/LA%vol, pulmonary vein to left atrium volume percent ratio; SNP, single nucleotide polymorphism.

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  FIGURE 3. Subgroup analysis of AF recurrence after AFCA according to PV/LA%vol. AF, atrial fibrillation; AFCA, atrial fibrillation catheter ablation; LA, left atrium or left atrial; PV, pulmonary vein; PV/LA%vol, pulmonary vein to left atrium volume percent ratio.

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  FIGURE 4. Comparisons of the predictive value of AF recurrence among LA dimension, LA volume, PV/LA%vol, and PV/LA%vol with PITX2 genome in the tertile groups according to the LA dimension. Comparisons of AUCs between PV/LA%vol, LA volume, and LA dimension in the T1 (A), T2 (B), and T3 (C) LA dimension groups. Comparisons of AUCs between PV/LA%vol and PV/LA%vol with PITX2 gene in the T1 (D), T2 (E), and T3 (F) LA dimension groups. AF, atrial fibrillation; AUC, Area under the receiver operating characteristic curve; LA, left atrium or left atrial; PV/LA%vol, pulmonary vein to left atrium volume percent ratio.