Thanks to everyone for your support and advice.
My husband was found to have one failed graft and some calcium build up in his arteries. The surgeon said they were reluctant to insert stents in formerly repaired grafts but he said he'd give it a try.
He enlarged the artery with a balloon as much as possible and inserted a stent.
We are both now anxious to avoid any further problems so would be grateful for advice on going forward.
