[Nontherapeutic international normalized ratio results in hospital emergency patients on vitamin K antagonists: prevalence and associated factors].

Objectives: To determine the prevalence of international normalized ratio (INR) findings outside the normal range in hospital emergency department patients on vitamin K antagonists (VKAs). To identify factors associated with abnormal anticoagulant levels in these patients.

Material And Methods: Observational, cross-sectional, multicentric study in 4 hospital emergency departments.