Had 5-way CABG 3.5 yrs ago, but due to abnormality on recent nuclear stress test, I underwent an angiogram 2 days ago. The original bypasses were "not found," which may indicate they have failed or are blocked. And a stent was added for blockage over 70% in LAD. Another blockage was ignored for now. Very worrisome, and I have appt to discuss in more detail soon. Has anyone else experienced this? I know bypasses can fail, but 4-5? My diet has been heart-healthy perfect, and I exercise diligently.