Objective To explore the clinical effect and safety of using levosimendan to treat senile severe congestive heart failure(CHF).Methods 80cases of senile severe CHF were randomly divided into the observation group and the contrast group.The contrast group was treated with such regular drugs as digitalis,angiotensin converting enzyme inhibitor,angiotensin Ⅱ receptor antagonistic drug,nitrate and diuretic in addition to anti-infection method,salt restriction and the correction of causative factor,while the obs...