Low Incidence of Cardiac Events in Statin-Administered Patients in CAG Study

Abstract

The effect of statins in preventing cardiac events in Japanese coronary artery disease (CAD) patients was studied in a retrospective investigation of 148 patients diagnosed with CAD by coronary angiography (CAG). Sixty-five patients received statins within 2 weeks after CAG, and 83 patients did not receive statins after CAG. In the statin group, total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) were reduced significantly with statin administration (p<0.01). In the non-statin group, baseline levels of TC, LDL-C and high-density lipoprotein cholesterol were not changed significantly at the end of the follow-up period. As for the effect of statin in preventing cardiac events, the incidence of cardiac events was significantly lower (p<0.0003) in the statin group (n=5: 8%) than in the non-statin group (n=28: 34%). In subanalysis of 37 patients whose TC at the time of initial CAG was less than 200 mg/dL, none of the statin group (n=17) suffered a cardiac event. This was significantly lower than the incidence of cardiac events in the non-statin group (n=5: 25%; p<0.05). The present study demonstrated that lowering LDL-C of Japanese CAD patients by statin administration is effective to prevent cardiac events, particularly, a second percutaneous coronary intervention (PCI) for restenosis of a coronary artery following the initial PCI whether or not these patients had hypercholesterolemia.