Abstract 17235: Comparision of Outcomes in Patients Undergoing Catheter versus Surgical Ablation for Atrial Fibrillation and Heart Failure With Preserved Ejection Fraction

Introduction: There is a lack of research comparing outcomes of Surgical Ablation (SA) and Catheter Ablation (CA) among Atrial Fibrillation(AF) patients with heart failure with Preserved Ejection Fraction (HFpEF) and . Hypothesis: The main objective is to compare short-term clinical outcomes of SA and CA in AF patients with HFpEF. Methods: We used the national inpatient sample to identify patients over 18 years with HFpEF hospitalization and AF, and undergoing SA and CA from 2016 - 2017. The clinical outcomes of SA versus CA in AF stratified as non-paroxysmal and paroxysmal were analyzed. Results: 1,530 HFpEF hospitalizations with AF who underwent SA and 1,045 HFpEF hospitalizations with AF who underwent CA were included in the analysis. Patients undergoing CA had higher baseline comorbidity. The in-hospital mortality between HFpEF with AF undergoing SA as compared to CA was similar (1.9% versus 1.4%, adjusted P-value 0.04). Patients undergoing SA had a significantly longer length of hospital stay, a higher percentage of post-procedural, and cardiac complications. In HFpEF patients with non-paroxysmal AF, SA as opposed to CA was associated with a higher percentage of in-hospital mortality (2.7% versus 0%, adjusted P-value=0.23), a longer length of stay, a higher cost of treatment, and a higher percentage of cardiac complications. Conclusions: In conclusion, CA is associated with lower in-hospital outcomes as compared to SA among AF with HFpEF patients. Further research with freedom from AF is needed between this group with long-term out c omes.