To study compliance with secondary prevention during the first months following discharge from the cardiac intensive care unit (CIC) of patients experiencing a first episode of acute coronary syndrome : quantitative compliance over 3 months with the two principal treatments of the prescription (a statin - rosuvastatin, Crestor® and a platelet aggregation inhibitor - clopidogrel, Plavix®), using an electronic measure system ("intelligent blister" pack®);