A decade of catheter ablation of cardiac arrhythmias in Sweden: ablation practices and outcomes

Figures

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  Figure 1. Types of catheter ablations in Sweden between 2006 and 2015. P < 0.0001 (Pearson χ2). AF, ablation of atrial fibrillation; AT, ablation of atrial tachycardia; AVN, AV-nodal ablation; AVNRT, AV-nodal re-entry tachycardia ablation; AP/WPW, accessory pathway/Wolff–Parkinson–White syndrome; CTI, cavotricuspid isthmus ablation; PVC, ablation of premature ventricular contraction; VT, ablation of ventricular tachycardia.

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  Figure 2. (A) Median procedure time, by ablation type and treatment year. (B) Median fluoroscopy time, by ablation type and treatment year. (C) Acute success, by ablation type and treatment year. (D) Median radiation dose, by ablation type and treatment year. *P < 0.001 (independent sample Kruskal–Wallis test); †P = 0.005 (independent sample Kruskal–Wallis test); ‡P = 0.001 (independent sample Kruskal–Wallis test); #P = 0.023 (Mantel–Haenzsel test for trend). AF, ablation of atrial fibrillation; AT, ablation of atrial tachycardia; AVN, AV-nodal ablation; AVNRT, AV-nodal re-entry tachycardia ablation; AP/WPW, accessory pathway/Wolff–Parkinson–White syndrome; CTI, cavotricuspid isthmus ablation; PVC, ablation of premature ventricular contraction; VT, ablation of ventricular tachycardia.

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  Figure 3. Cumulative incidence function plot illustrating the probability of repeat ablation (same arrhythmia) after a de novo ablation. Numbers at risk are illustrated in the accompanying table. AF, ablation of atrial fibrillation; AVN, AV-nodal ablation; AVNRT, AV-nodal re-entry tachycardia ablation; AP/WPW, accessory pathway/Wolff–Parkinson–White syndrome; CTI, cavotricuspid isthmus ablation; PVC, ablation of premature ventricular contraction; VT, ablation of ventricular tachycardia.

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  Figure 4. Rate of repeat ablation (for the same substrate) in de novo ablations with acutely successful result (as judged by the operator by the end of the procedure), by arrhythmia substrate and year of index procedure. The thicker line represents the rate of repeat ablation within 1 year of the index procedure, whereas the thinner lines represent the rate of repeat ablation within 3 years of the index procedure. Analyses for trend was performed using Mantel–Haenzsel test for trend. AF, ablation of atrial fibrillation; AT, ablation of atrial tachycardia; AVN, AV-nodal ablation; AVNRT, AV-nodal re-entry tachycardia ablation; AP/WPW, accessory pathway/Wolff–Parkinson–White syndrome; CTI, cavotricuspid isthmus ablation; PVC, ablation of premature ventricular contraction; VT, ablation of ventricular tachycardia.