Help with Open heart surgery

My husband Kirby has had to have open heart surgery.  He had a heart attack and they found 1 arterie 100% blocked and 2 at 95% blocked.  He has been healthy as an Ox so this has come to a complete shock and scare.  We are asking for help with his medical billsand loss of wages.  We do have Insurance but as some of you know it only covers so much.  He is in the sales business, we live on commission alone so this will put us in a deep deep hole.  We are not young any more and we dont have a lot for our retirement. He is a VERY hard working man and for this to happen to him is only making his stress level rise. 
We also, still have a son in college for his last year which we pay for.  This has been a huge goal of ours to keep him from having student loans. 
As I write this I feel blessed that Kirby is still alive and we are hopefully able to spend another 29 years together.  Thank you all in advance for any donation that you can spare.
God Bless