Use of dronedarone or pharmaceutically acceptable salts thereof, for the preparation of a medicament for use in the prevention of cardiovascular hospitalization or of mortality in patients having a first recurrence of atrial fibrillation or atrial flutter.本發明係關於一種決奈達隆(dronedarone)或其醫藥上可接受的鹽於製備用於預防具有第一次心房纖維性顫動或心房撲動復發之病患的心血管疾病住院或死亡的藥物之用途。(無元件符號說明)