Related Experiment Video
Updated: Aug 5, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Rising Comorbidity Burden in Inpatient Atrial Fibrillation Catheter Ablation: Temporal Trends and In-Hospital
Eran Leshem1,2, Bar Ehrenberg1,2, Adam Folman1,2
1Technion Israel Institute of Technology, The Ruth and Bruce Rappaport Faculty of Medicine, Technion City, Haifa, Israel.
Insights
Catheter ablation (CA) for atrial fibrillation (AF) is increasingly performed in patients with high comorbidity burden. This trend is associated with increased complications and mortality, necessitating careful risk assessment.
Area of Science:
- Cardiology
- Health Services Research
Background:
- Catheter ablation (CA) for atrial fibrillation (AF) has seen technical advancements, yet success rates remain stagnant.
- Treating elderly patients with multiple comorbidities may reduce CA efficacy and increase complication risks.
Purpose of the Study:
- To analyze trends in comorbidity burden among patients undergoing inpatient CA for AF.
- To assess the association between comorbidity burden and in-hospital outcomes.
Main Methods:
- Analysis of 64,995 inpatient CA procedures for AF from the National Inpatient Sample (2016-2021).
- Comorbidity burden evaluated using a standardized index; outcomes compared between high and low burden groups.
- Annual trends in high comorbidity burden patient rates calculated.
Main Results:
- The proportion of AF CA patients with high comorbidity burden rose from 11.7% (2016) to 22.1% (2021).
- High comorbidity burden patients experienced higher total complications (14.2% vs. 7.8%) and in-hospital mortality (1.5% vs. 0.2%).
- Complications were driven by vascular, infectious, and respiratory issues, not cardiac ones.
Conclusions:
- Inpatient AF CA is increasingly performed in patients with significant comorbidities.
- Preprocedural risk-benefit assessment is crucial for optimizing outcomes in high-comorbidity patients.
Background:
Despite advancements in catheter ablation (CA) technique and expertise, success rates of atrial fibrillation (AF) ablation have not substantially improved in recent years. Treating patients with advanced age and higher comorbidities may limit success rates while increasing complications.
Objective:
To evaluate trends in comorbidity burden and its association with in-hospital outcomes following inpatient CA procedures for AF.
Methods:
Using the National Inpatient Sample database, an estimated total of 64,995 CA procedures for AF between 2016 and 2021 in the United States were analyzed. Each patient's comorbidities were identified, and their comorbidity burden was evaluated using a standardized comorbidity index. In-hospital outcomes were compared between patients with high and low comorbidity burdens. Annual trends in the rates of patients with high comorbidity burden were calculated.
Results:
A total of 11,685 (18.0%) patients had high comorbidity burden. The annual trend in CA procedures for patients with high comorbidity burden gradually increased from 11.7% in 2016 to 22.1% in 2021 (p < 0.001). A higher rate of total complications was observed in patients with high comorbidity burden (14.2% vs. 7.8%, p < 0.001), driven by vascular, infectious, and respiratory complications, but not by cardiac complications. In-hospital mortality was significantly higher among those with a high comorbidity burden (1.5% vs. 0.2%, p < 0.001).
Conclusion:
In recent years, inpatient CA for AF has increasingly been performed in patients with higher comorbidity burden. A careful preprocedural risk-benefit assessment would be prudent in patients with high comorbidity burden to improve outcomes.
Related Concept Videos
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Dysrhythmias VI: Management of Dysrhythmias

