A Novel Orderset Driven Emergency Department Atrial Fibrillation Algorithm to Increase Discharge and Risk-appropriate Anticoagulation.

Introduction: Patients with atrial fibrillation (AF) are frequently admitted from the emergency department (ED), and when discharged, are not reliably prescribed indicated anticoagulation. We report the impact of a novel computerized ED AF pathway orderset on discharge rate and risk-appropriate anticoagulation in patients with primary AF.

Methods: The orderset included options for rate and rhythm control of primary AF, structured risk assessment for thrombotic complications, recommendations for anticoagulation as appropriate, and follow up with an electrophysiologist. All patients discharged from the ED in whom the AF orderset was utilized over an 18-month period comprised the primary study population. The primary outcome was the rate of appropriate anticoagulation or not according to confirmed CHADS-VASC and HASBLED scores. Additionally, the percentage of primary AF patients discharged directly from the ED was compared in the 18-month periods before and after introduction of the orderset.

Results: A total of 56 patients, average age 57.8 years and average initial heart rate 126 beats/minute, were included in the primary analysis. All 56 (100%; 95% confidence interval, 94-100) received guideline-concordant anticoagulation. The discharge rates in the pre- and postorderset implementation periods were 29% and 41%, respectively (95% confidence interval for 12% difference, 5-18).

Conclusions: Our novel AF pathway orderset was associated with 100% guideline-concordant anticoagulation in patients discharged from the ED. Availability of the orderset was associated with a significant increase in the proportion of ED AF patients discharged.