Abstract
Background: Diabetes has been associated with complications and poor perioperative outcomes. In Radiofrequency catheter ablation - therapy of choice for drug refractory atrial fibrillation and flutter, association between diabetes and procedural complications are less documented. Objectives: To examine if there is a difference in perioperative complications in patients with chronic diabetes who underwent RFA for atrial fibrillation/flutter when compared with non-diabetics. Methods: We selected patients > 45 years from the National Inpatient Survey data 2014. We identified 8356 patients (69.6 ± 9.1yrs) who underwent catheter ablation. Logistic regression analyses were performed to investigate the difference in perioperative complications (hemorrhage, cardiac perforation, cardiac complications, respiratory complications, peripheral vascular complications, stroke and in-hospital mortality) between diabetics and non-diabetics. All models were adjusted for age, gender, race, residential income, insurance, co-morbidities, hospital bed size, hospital location/teaching status, hospital region, length of stay and median household income. Results: Among our selected 8356 patients, 5777(69.1%) were non-diabetics, 2203(26.4%) had uncomplicated diabetes and 376 (4.5%) complicated diabetes. Overall there were 634 events (240 hemorrhages, 56 perforations, 163 cardiac complications, 43 respiratory complications, 12 strokes, 40 peripheral vascular complications and 80 in-hospital death. Rates of complications were the same among diabetes and non-diabetics. In the multivariate models, the odds of complications remain statistically non-significant across all the groups. However, among all the patients who underwent RFA, there is an increased odds of hemorrhage among patients with Medicare insurance versus private insurance (OR 1.73 95%CI 1.11-2.70), peripheral vascular complications among hospitals in the south (OR 3.35 95%CI 1.30-9.62), respiratory complications among patients with CHF (4.60 95%CI 1.68-12.60), death among patients with renal failure (OR 2.22 95%CI 1.32-3.73) and hospitals in the south (2.55 95% CI 1.08-6.0) and west (OR 3.23 95%CI 1.25-8.3) compared to the northeast. Odds of stroke were less among both urban non-teaching (OR 0.02 95%CI 0.01 - 0.34) and teaching hospital (OR 0.05 95%CI 0.01-0.36) when compared to rural hospital. Conclusions: RFA has a similar procedural safety in diabetics when compared to non-diabetic patients. It remains a safe procedure in diabetics with drug-refractory atrial fibrillation and flutter. Renal failure, CHF, type of Insurance, hospital location and teaching status are predictors of complications after RFA.
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