The famous Nobel Prize winning physicist is said to have died because
"A ruptured duodenal ulcer caused kidney failure",
leading to his death 12 days later. I understand that the kidney might have needed to do more filtration work due to this rupture, and maybe the ulcer contained some material too hard on the kidney, but how exactly does the contents of the ulcer spewing into the duodenum result lead to kidney failure? What are the steps that would occur that would lead to this outcome?