الفهرس 
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Abstract
Back groaned: chronic heart failure (CHF) is a progressive syndrome that results in a poor quality of life for the patient and places an economic burden on the health care system, despite advances in the control of cardiovascular diseases such as myocardial infarction (MI), the incidence and prevalence of CHF continue to increase, the CHADS2 score and its updated version, the CHA2DS2-VASc score, are clinical prediction rules for estimating the risk of stroke in patients with non-rheumatic a atrial fibrillation (AF), a common and serious heart arrhythmia associated with thromboembolic stroke, Such a score is used to determine whether or not treatment is required with anticoagulation therapy or ant platelet therapy Objective: To evaluate the role of CHADS VASC score in risk easement and prediction of hospital outcome of chronic heart failure with and without A.F Patients and methods: We enrolled 210 consecutive patients who admit with chronic heart failure to the cardiovascular department at specialized medical Hospital, in Mansoura University between march2017 and March 2018, the age ranged from 17years to 94 years, 148was males62females,the clinical variables include factors as; NYHA functional class, exercise variables signs of reduced perfusion, low blood pressure. Laboratory variables: complete blood picture, BNP, RBS, renal function test, liver function test, serum sodium, serum potassium, and albumin. Echocardiography variables, 6MWT, ECG variables. Results: In our study mean age 66.94 highly significant increase in mean age of group II compared to group I (p>0.001) and a highly significant increase in percentage of female in group II compared to group I (p>0.001). High CHADS-VASc score is association with lower 6MWT (p0.024), High CHADS-VASc score is association with higher mortality in HF patient (p=0.031). There was a high prevalence of DM, hypertension, stroke and AF in the group II when compared to group I (p<0.001). Multi variant regression analysis after adjusting the confounding factors showed that, the highest risk of VASC degree ≥4 were among patients with stroke (OR=29.01), female sex (OR=3.79) and patient aged >60 years (OR=1.15).