[Pharmaceutical care of a patient with oral anticoagulation and renal impairment].

Atrial fibrillation is one of the most important indications for oral anticoagulation. Besides vitamin K antagonists, the novel oral anticoagulants dabigatran, apixaban, edoxaban and rivaroxaban are one therapy option in patients with atrial fibrillation. The following case report describes an 83-year-old female patient treated with dabigatran for secondary stroke prevention. Due to different factors, the renal function of the patient decreases significantly (acute on chronic renal failure), resulting in a re-evaluation of the current treatment. This case report is an example of decision-making 'for and against' novel oral anticoagulants versus vitamin K antagonists.