Comparison of Coronary Angioplasty and Optimum Medical Therapy Versus Optimal Medical Therapy in the Stable Angina (ORBITA)

In this study the investigators will use careful scientific blinding of patient and their subsequent healthcare staff so that the investigators can determine exactly how much difference coronary angioplasty makes to symptoms and blood supply to the heart. After the 6 weeks blinded phase, all patients will be unblinded and the patients who had undergone sham procedure will be offered the active therapy.