title: [Determination of regimen fluindione needed for anticoagulation in the elderly].
abstract: BACKGROUND
  There is no validated method to predict the daily maintenance dosage of oral anticoagulation treatment by fluindione in the elderly patients. The aim of our prospective study was to look for a relation between INR at day 2 after a fixed dosage of fluindione and the daily maintenance dosage of fluindione necessary to obtain an INR value between 2 and 3.
  
  
  METHODS
  Ten milligrams of fluindione were administered on first and second day of treatment. INR was determined the third day.
  
  
  RESULTS
  From this value, we were able to determine the daily dosage of fluindione (+/- 5mg) that maintained a steady state INR value between 2 and 3.
  
  
  CONCLUSIONS
  In these very elderly patients, there was a relation between INR at the third day after a fixed dosage of fluindione and the daily maintenance dosage of fluindione necessary to obtain an INR value between 2 and 3.
authors.affiliation: Service de gérontologie II, AP-HP, hôpital Sainte-Périne, 11, rue Chardon-Lagache, 75781 Paris cedex 16, France. laurent.lechowski@spr.ap-hop-paris.fr
authors.forename: L
authors.initials: L
authors.lastname: Lechowski
authors.forename: L
authors.initials: L
authors.lastname: Teillet
authors.forename: M
authors.initials: M
authors.lastname: Harboun
authors.forename: D
authors.initials: D
authors.lastname: Tortrat
authors.forename: B
authors.initials: B
authors.lastname: Forette
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000925:Anticoagulants / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008297:Male; D010630:Phenindione / Q000008:administration & dosage* / Q000031:analogs & derivatives*; D011446:Prospective Studies
chemical_list: D000925:Anticoagulants; D010630:Phenindione; C017673:fluindione