My 88-year-old mother has dry gangrene on her foot and leg from atherosclerosis. Due to many other complications (heart, blood clotting) shes not a candidate for amputation, which has been suggested by a physician. What is her life expectancy if the dry grangrene is left untreated?
Hi, sorry to note about the condition your mother is suffering from. Gangrene is a potentially life-threatening condition caused by a critically insufficient blood supply causing tissue necrosis.  Chat Doctor.  But since the dead tissue is more viable for infection, it is difficult to predict about the life expectancy. Once the infection sets in locally and starts spreading inside the body (septicemia), then they land up in one by once complication of multi-organ failure.