Point-of-Care Testing of Coagulation in Patients Treated With Direct Oral Anticoagulants 1

Inclusion Criteria: * Stroke patients, who were newly started on oral anticoagulation with rivaroxaban, apixaban or dabigatran for secondary prevention of thromboembolic events * Age ≥ 18 years Exclusion Criteria: * Vitamin K antagonists or direct oral anticoagulants ≤ 14 days prior to study participation * Low-molecular weight heparin ≤ 24 hours * Unfractionated heparin ≤ 12 hours * Abnormal coagulation values at baseline (Quick \< 70% or activated thromboplastin time (aPTT) \> 40sec.) * History of coagulopathy