What must i expect in terms of effects having atherectomy for cad?

Same as angioplasty: This should not feel any different from a regular angioplasty. As far as long term effects, the usual patient for atherectomy does not have very good anatomy and that is primarily the reason atherectomy is used. Hard, calcified plaques are usually not amenable to other methods of angioplasty. There are many cases when atherectomy is combined with stenting which is usually a better outcome.