Bypasses plugged 3 weeks after Quadruple Bypass Surgery

Posted By Tom on October 29, 1998 at 22:54:57:







My father underwent qualdruple bypass surgery 3 weeks ago.  He had some
chest pains 2 days ago, and after an angiogram, underwent an angioplasty
and shunt insertion for a blockage.  He was also diagnosed with a very
mild heart attack.  They now have informed him that 3 of the 4 bypasses
they installed show blockages (one at about 90%, and the other two over
60%), and they suggest angioplasty on the bypassed arteries.  I am
wondering if it is at all common for these bypasses to plug up within
3 weeks of being installed (his diet is good, he does not smoke and he is
not overweight), and what would be plugging them.  It seem unlikely to me
that placque which took 68 years to form on his arteries would clog up a
supposedly clean bypass in 3 weeks.  Is there any treatment he should be
looking into?
Thanks for any information.