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A decade of catheter ablation of cardiac arrhythmias in Sweden: ablation practices and outcomes
Department of Cardiology, Skåne University Hospital, Lund University, Lund, Sweden .
Department of Cardiology, Umeå University Hospital, Umeå, Sweden .
Department of Clinical Sciences, South Hospital, Arrhythmia Center, Karolinska Institute, Stockholm, Sweden.
Department of Cardiology, Uppsala University Hospital, Uppsala, Sweden .
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2019 (English)In: European Heart Journal, ISSN 0195-668X, E-ISSN 1522-9645, Vol. 40, no 10, p. 820-830Article in journal (Refereed) Published
Abstract [en]

Aims: Catheter ablation is considered the treatment of choice for many tachyarrhythmias, but convincing real-world' data on efficacy and safety are lacking. Using Swedish national registry data, the ablation spectrum, procedural characteristics, as well as ablation efficacy and reported adverse events are reported.

Methods and Results: Consecutive patients (18years of age) undergoing catheter ablation in Sweden between 01 January 2006 and 31 December 2015 were included in the study. Follow-up (repeat ablation and vital status) was collected through 31 December 2016. A total of 26642 patients (5715years, 62% men), undergoing a total of 34428 ablation procedures were included in the study. In total, 4034 accessory pathway/Wolff-Parkinson-White syndrome (12%), 7358 AV-nodal re-entrant tachycardia (21%), 1813 atrial tachycardia (5.2%), 5481 typical atrial flutter (16%), 11916 atrial fibrillation (AF, 35%), 2415 AV-nodal (7.0%), 581 premature ventricular contraction (PVC, 1.7%), and 964 ventricular tachycardia (VT) ablations (2.8%) were performed. Median follow-up time was 4.7years (interquartile range 2.7-7.0). The spectrum of treated arrhythmias changed over time, with a gradual increase in AF, VT, and PVC ablation (P<0.001). Decreasing procedural times and utilization of fluoroscopy with time, were seen for all arrhythmia types. The rates of repeat ablation differed between ablation types, with the highest repeat ablation seen in AF (41% within 3years). The rate of reported adverse events was low (n=595, 1.7%). Death in the immediate period following ablation was rare (n=116, 0.34%).

Conclusion: Catheter ablations have shifted towards more complex procedures over the past decade. Fluoroscopy time has markedly decreased and the efficacy of catheter ablation seems to improve for AF.

Place, publisher, year, edition, pages
Oxford University Press, 2019. Vol. 40, no 10, p. 820-830
Keywords [en]
Catheter ablation, Adverse events, Outcome
National Category
Cardiac and Cardiovascular Systems
Identifiers
URN: urn:nbn:se:oru:diva-73403DOI: 10.1093/eurheartj/ehy709ISI: 000461141900010PubMedID: 30452631Scopus ID: 2-s2.0-85062625318OAI: oai:DiVA.org:oru-73403DiVA, id: diva2:1300669
Funder
The Crafoord FoundationSwedish Heart Lung Foundation
Note

Funding Agencies:

Swedish Association of Local Authorities and Regions 

Eva and Carl-Eric Larsson Foundation  

Bundy Academy  

Skåne University Hospital Research Foundation  

Available from: 2019-03-29 Created: 2019-03-29 Last updated: 2019-03-29Bibliographically approved

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Poçi, Dritan

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