The invention relates to the use of (2R,3R)-2-(3-carbamimidoyl-benzyl)-3-[4-(1-oxy-pyridin-4-yl) benzoylamino]-butyric acid methyl ester or a pharmaceutically acceptable salt thereof, for the preparation of a medicament for use in non-ST elevation myocardial infarction, said treatment comprising administering a therapeutically effective amount of (2R,3R)-2-(3-Carbamimidoyl-benzyl)-3-[4-(1-oxy-pyridin-4-yl) benzoylamino]-butyric acid methyl ester or a pharmaceutically acceptable salt thereof to a human patient, who is elderly and/or shows renal insufficiency and/or has a low body weight.La présente invention concerne lutilisation dester méthylique dacide (2R,3R)-2-(3-carbamimidoyl-benzyl)-3-[4-(1-oxy-pyridin-4-yl) benzoylamino]-butyrique, ou dun sel pharmaceutiquement acceptable de celui-ci, en vue de la préparation dun médicament utilisable en cas dinfarctus du myocarde sans élévation du segment ST, ledit traitement comprenant ladministration dune quantité thérapeutiquement efficace dester méthylique dacide (2R,3R)-2-(3-carbamimidoyl-benzyl)-3-[4-(1-oxy-pyridin-4-yl) benzoylamino]-butyrique, ou dun sel pharmaceutiquement acceptable de celui-ci, à un patient humain, âgé et/ou souffrant dinsuffisance rénale et/ou de faible poids.