Please read this Dr. Stoll. Please read this Dr. Stoll. Actually, a more specific diagnosis would be a dissecting aneurysm which means that if they had made the diagnosis it was treatable surgically before it killed him. Too bad there was no autopsy. That is why the doc has to take into account the entire picture to make a diagnosis.
Diabetics can have slower than normal bowel transit.
My father died at age 61 during a hospital visit to repair a detached retina. He had a massive heart attack when a nurse tried to feed him in too prone a position. He'd had some previous heart attacks. Losing a parent is a big adjustment.