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Aggressive treatment with statins reduces the risk of subsequent cardiovascular events in patients with coronary artery disease (CAD) even if they have very low LDL cholesterol (LDL-C) levels.
Amsterdam, The Netherlands – Saturday 31 August 2013: Aggressive treatment with statins reduces the risk of subsequent cardiovascular events in patients with coronary artery disease (CAD) even if they have very low LDL cholesterol (LDL-C) levels, reveals research presented at ESC Congress 2013 today by Dr Emi Nakano from Japan.
Dr Nakano said: “Many randomised clinical trials, such as Treating to New Targets (TNT) and PROVE IT-TIMI, have shown that aggressive cholesterol lowering with statins improves clinical outcomes in patients with CAD and high LDL-C levels.1,2 But until now it was not known whether aggressive lipid lowering with statins would also benefit CAD patients with very low LDL-C levels.”
The current study used the Ibaraki Cardiovascular Assessment Study (ICAS), a registry of 2,238 patients from 12 hospitals in the Ibaraki region of Japan, who between 0 and 1 month underwent percutaneous coronary interventions. Based on serum LDL-C levels at initial presentation participants were classified into three groups: very low (<70 mg/dl, n=214); low (71-100 mg/dl, n=669); and high (>101 mg/dl, n= 1,355). Decisions of whether to prescribe statins or not, as well as the type and dose, were left to the discretion of treating physicians.Patients were followed up for a maximum of 3 years. The efficacy of statin treatment was analysed on the composite outcome of Major Cardiovascular Events (MACE), defined as all cause mortality, non-fatal myocardial infarction and non-fatal stroke.Statins were prescribed in 68% of patients (143) with very low LDL-C, 67% of patients (450) with low LDL-C and 67% of patients (913) with high LDL-C. A total of 204 patients experienced MACE during the median follow-up of 404 days.The results of a Kaplan-Meier estimate show that three years of statin treatment produced significant reductions in the incidence of MACE in all three groups (p<0.001 for all groups). A Cox regression hazard analysis adjusted for age and gender showed that statins were the main determinant of better outcome regardless of the LDL-C level (p<0.01).
Dr Nakano said: “Our study shows that CAD patients with very low LDL-C levels at initial presentation also benefit from statin treatment. We speculate that statins prevent the enlargement of atherosclerotic plaques and plaque disruption in these patients.”
She added: “Some doctors have been hesitant to prescribe statins in patients with very low LDL-C because of uncertain benefit and the risk of side effects with statins. But our findings suggest that all CAD patients should receive statins to reduce their risk of future cardiovascular events.”
Dr Nakano concluded: “The next step should now be to initiate a randomised controlled trial of statin use in patients with CAD and very low LDL-C levels. This trial should be designed to confirm the benefits of statins for preventing future cardiovascular events in these patients, and to identify which type and dose of statins are most beneficial.”
This press release accompanies both a presentation and an ESC press conference at the ESC Congress 2013. Edited by the ESC from material supplied by the investigators themselves, this press release does not necessarily reflect the opinion of the European Society of Cardiology. The content of the press release has been approved by the presenter.More information on the ESC Press Conference page: Statins for all forever?
About the European Society of CardiologyThe European Society of Cardiology (ESC) represents more than 80 000 cardiology professionals across Europe and the Mediterranean. Its mission is to reduce the burden of cardiovascular disease in Europe. About ESC Congress 2013The ESC Congress is currently the world’s premier conference on the science, management and prevention of cardiovascular disease. The spotlight of this year's event is "The Heart Interacting with Systemic Organs". ESC Congress 2013 takes place from 31 August to 4 September at the RAI centre in Amsterdam, Netherlands. More information on ESC Congress 2013 contact the ESC Press Office.
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