[Assessing post-hospitalization therapeutic ranges in elderly patients treated for atrial fibrillation with vitamin k antagonists].

Background: In France, anticoagulants are among the most recommended treatments for serious accidents, particularly among the elderly.

Objectives: The purpose of this study was to evaluate the impact of practical and validated tools designed to reduce the negative effects of vitamin K antagonist (VKA) treatments by assessing patients before and after the tools were implemented.

Methods: An exhaustive before and after multi-centric cohort study was performed in the Agen territory.