<s>[INST] My father had survived a sudden cardiac death episode at 44. Since he has received a triple bypass, several angiograms and angiplasties, has an internal difibulator with pace maker.  He will be turning 67 next week and per his angiogram on Friday, we have learned that the bypass artery is still in good condition howver the arteries the bypasses are attached to are deteriorating.  What should be expect going forward due to the increased deterioriting of these vessels? [/INST] Hi, Firstly it's good to know that your dad is doing well and the Cardiac bypass arteries are working well as they're of prime importance.  As for the native arteries, they will progress in the natural atherosclerosis. keep a watch on them by keeping a regular touch with your cardiologist and angiography  when necessary. if they progress and develops symptoms like angina/breathlessness, then few medicines will have to be added. present technology also allow to do angioplasty in those arteries. </s>