This is Dr.Suleman , Well dear friend deciding Stent
VS Bypass is not that simple as it seems. let me explain how you decide between these two.
ByPass (called as CABG) is very lengthy and dangerous procedures. We have to open full chest and will stop heart for sometime and will perform surgery. Due to its this lengthy and dangerous procedures researchers started Interventional procedures like STENT and angioplasty
The only problem with Stent is that recurrence of disease as comparatively high than bypass. this is the price you will pay for less risky procedure. but doing angioplasty one more time is still not as risky as single time Bypass. So if number of blood vessels which are blocked to heart are not high in number than STENT is always better than Bypass. but if more blood vessels to heart are blocked than Bypass is a better option.
Now I suggest you that please do angiography
one more time and if the blood vessels which are block are less in number than do STENTS not Bypass. as i explained Bypass is a risky procedures especially at this age. and I have seen so many patients on my ward who underwent Bypass surgery
and still they got the disease again. so its all about good control of risk factors which causes the heart disease