The report mentions that you had an angioplasty last year. Now the stent has developed blockage again in a years time. Do you know what type of stent was inserted the first time.  if it was a good quality drug eluting stent, then no point in going for angioplasty again as this soon reblock.  You should consider by pass surgery. if the stent last time was not a good quality drug eluting stent, then you can consider angioplasty but definitely with the best drug eluting stent.