Effect of Atorvastatin on Fractional Flow Reserve in Coronary Artery Disease

Natural course of intermediate coronary artery disease (CAD) is very important to predict the prognosis of the patient with such disease. Several studies have well demonstrated the beneficial effect of lipid-lowering therapy on the progression of CAD with the modification of lipid profiles. This effect can be also explained by intravascular ultrasound (IVUS) or optical coherence tomography. However, the effect of plaque modification on coronary physiology has been rarely evaluated. This research is to evaluate the change of intermediate or nonculprit coronary lesion on lipid-lowering therapy via IVUS(optional) and FFR.