A Prospective, Open Label Study to Evaluate the Pharmacokinetics of Dabigatran in Non-valvular Atrial Fibrillation (NVAF) Patients With Severely Impaired Renal Function on Dabigatran Etexilate 75 mg BID Therapy

The goal of this study is to assess dabigatran pharmacokinetics in NVAF subjects with severe renal impairment defined as creatinine clearance between 15 and 30 mL/min calculated by Cockcroft-Gault formula. The dabigatran etexilate dose of 75 mg BID was approved by the FDA for NVAF patients with severe renal impairment (CrCl 15-30 mL/min) , based on pharmacokinetic modeling and simulation.