Incidence of complications related to catheter ablation of atrial fibrillation and atrial flutter: a nationwide...

Area of Science:

• Cardiology
• Medical Informatics
• Public Health

Background:

• Existing data on catheter ablation risks may underestimate real-world outcomes.
• Nationwide assessment is crucial for understanding actual complication rates.

Purpose of the Study:

• To evaluate the in-hospital complication rates of catheter ablation for atrial fibrillation and atrial flutter in Germany.
• To compare complication rates based on procedure type, energy source, center volume, and patient comorbidities.

Main Methods:

• Analysis of nationwide administrative data from 33,353 in-hospital cases in Germany in 2014.
• Utilized ICD-10-GM and German Operation and Procedure Classification (OPS) codes.
• Stratified analysis by ablation type (left atrial vs. atrial flutter) and center volume.

Main Results:

• Overall complication rates for left atrial ablation: 11.7%-13.8%; major complications: 3.8%-7.2%.
• Atrial flutter ablation had lower overall rates (10.5%) but higher major complication rates (7.4%) and in-hospital deaths (0.34% vs. 0.09%).
• Centers performing >100 left atrial ablations annually had significantly fewer complications (12.7% vs. 16.4%).

Conclusions:

• Nationwide data reveal higher-than-expected complication rates for catheter ablation in Germany.
• Atrial flutter ablations carry a surprisingly high risk of major complications.
• Advanced age and comorbidities significantly influence complication risk; low-volume centers pose a higher risk.