Please find detailed answer below
Thanks for writing in to us.
Sorry to hear about your ailing father. The most likely problem being faced by him is blockage in the arteries (vessels) supplying blood to the lower limbs. Due to diminished flow he might have developed gangrenous changes on his toe. It is important to mention that diabetes
causes slow healing and also leads to complications which includes spread of the gangrene
to surrounding areas.
It is unimaginable to see your loved one get amputated. You may take another opinion from a vascular surgeon and then decide. If amputation
is not done, the gangrene will involve the other toes, foot, lower leg and then his entire leg might be affected. During this process there will be development of sepsis
(severe infection) which is a difficult phase for patient and care givers.
Death is due to spread of infection through out the body leading to heart failure
. I personally dont believe you must think about his end so soon. You please discuss the medical treatment options and supportive care and then decide.
Hope your query is answered.
Do write back if you have any doubts.