Statin-naive patients and those on statin therapy with ACS who are admitted to the cardiology ward of our public (National Health Service) hospital and are scheduled for early invasive strategy receive immediately on admission, always before angiographic procedure, high-dose statin therapy. Either atorvastatin 80 mg or rosuvastatin 40 mg is administered at the discretion of the physician. During hospitalization various pertinent cardiac and renal parameters, including hematological, angiographic, clinical data are registered in a dedicated database. Clinical follow-up and hematological analysis are done 1 month after discharge. A second follow-up, either clinical or by telephone, is done 1 year after discharge.