Operating Company decided to stop study due to strategic realignment and budgetary reasons

The purpose of this study is to evaluate the impact of a hospital quality improvement (QI) program on the use of guideline-recommended oral anticoagulants (OAC) in hospitalized patients with atrial fibrillation (AF) at risk for ischemic stroke. Specifically, the study will determine whether the intervention, compared to Usual Care, will result in a greater increase in the proportion of patients with AF at risk for ischemic stroke who are appropriately treated with OAC.

Inclusion Criteria:

• Inpatient hospitalization
• Primary or secondary discharge International Classification of Diseases (ICD)-9/10 diagnosis code for AF paroxysmal (I48.0), persistent (I48.1), chronic (I48.2), or unspecified (427.31, I48.91)
• Proxied Congestive Heart failure (CHA2DS2-VASC) score greater than or equal to (>=) 2 using ICD-9 diagnosis scoring algorithm developed previously. The scoring algorithm will be expanded to include ICD-10 codes
• Discharged to home, skilled nursing facility, inpatient rehabilitation, or nursing home

Exclusion Criteria:

• Presence of artificial mechanical heart valve by ICD-9/10 diagnosis or procedure code during comorbid identification period or current hospitalization
• Surgical procedure during hospitalization for open heart surgery, brain, or spine
• Intravenous heparin given on the day of discharge without warfarin/oral anticoagulant (OAC), antiplatelets, and/or aspirin
• History of left atrial appendage occlusion, including the Watchman device
• Any in-hospital (current hospitalization) bleeding identified by ICD-9/10 diagnosis codes

Hospitalized patients with atrial fibrillation (AF) at risk for ischemic stroke will be included.