198: Patients over 75 years of age with and without atrial fibrillation: characteristics and differences in a hospital cohort of 357 patients

IntroductionCharacteristics of patients with atrial fibrillation (AF) are well known, however the patients included in published studies are usually younger than patients encountered in daily practice in hospital.MethodWe performed a prospective observational study which aimed to describe all patients over 75 years hospitalized in a cardiology department. For each patient we collected cause of hospitalisation, medical and cardiovascular history. We compared patients with and without previous history of AF (“AF group” versus “sinus group”).ResultsAmong 1050 patients admitted during an inclusion period of 4 months, 357 patients were older than 75 years: 150 in the “AF group” and 207 in the “sinus group”. AF was paroxysmal, persistent and permanent respectively in 21%, 30%, and 48% of cases.Table – Main dataTOTAL N=357AF group N=150 (42%)Sinus group N=207(58%)pAge82±1383±1381±110.03Men18675 (50)106 (51.2)0.9HTA178 (50)76 (50.7)102 (49.5)0.9Diabetes86 (24.1)35 (23.3)51 (24.7)0.1Dyslipemia93 (26.1)35 (23.3)58 (28.2)0.3Ischemic heart disease13 (38.8)55 (36.7)83 (40.3)0.1Respiratory failure26 (7.28)13 (8.6)13 (6.28)0.4Valvular heart disease38 (10.5)20 (13.3)18 (8.73)0.04Pulmonary embolism20 (5.6)13 (8.6)7 (3.3)0.02AVC39 (10.9)23 (15.3)16 (7.7)0,01Thyroid disease32 (8.9)18 (12)14 (6.7)0.03Dementia23 (6.5)13 (8.7)10 (4.9)0.1Alcoholism11 (3)10 (6.7)1 (0.48)0.01Main cause of hospitalisationCardiac heart failure111 (31)67 (44.7)44 (21.4)<0.001Acute coronary syndrome67 (19)11 (7.3)56 (26.6)