Atrial Fibrillation After Cardiac Surgery: Incidence, Risk Factors, and Economic Burden
2010
Objective To evaluate the incidence of postoperative atrial fibrillation (POAF), the predisposing factors, the results of treatment before discharge, and the impact on duration and costs of hospitalization. Design A prospective observational study. Methods Patients who underwent cardiac surgery from January 1, 2007 to December 31, 2007. Interventions Electrocardiography was continuously monitored after surgery. Patients with symptomatic new-onset atrial fibrillation or lasting >15 minutes were treated with amiodarone and with DC shock in prolonged cases. Results POAF occurred in 29.7%, with the higher incidence between the 1st and 4th postoperative day. Age ( p 40 mm ( p p p = 0.010), and combined valve and bypass surgery ( p = 0.012) were multivariate predictors of POAF at logistic regression. Sinus rhythm was restored by early treatment in 205 of 215 patients. This was associated with a low incidence of cerebrovascular events ( Conclusions The overall incidence of POAF in the authors' center is close to 30%; 95.3% of patients were discharged in sinus rhythm. The increase in length and costs of hospitalization (on average, 1.0 day with a burden of about €1,800/patient) were significantly lower than in previous investigations.
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