Is it possible to treat dry gangrene without surgery of foot to kidney patient?

Depends: Depends on the level of gangrene. If it is the toes, they will fall off by themselves and there is not need of any surgical intervention. If it is the foot then you may need some sort of surgical intervention. Vascular continents is important as well.

Yes: If no infection just leave it alone. If infection seed you will need surgery.

Maybe: Can wait for the line of dead tissue to define itself, and at that point may be able to remove tissue. However, must watch for infection, make sure the pain is controlled, and determine why there is dry gangrene so the underlying pathology can be addressed.

Gangrene: It depends on where the gangrene is located. In the digits the gangrene will demarcate where the tissue death\ has occured and the to will fall off by itself. It must be monitored for infection. In other areas there may well be a need for surgical intervention - but first studies need to be done to determine where proper perfusion is . Good luck.

Possibly: But probably not. You need vascular studies to see where the blockage of blood flow is, and take it from there. One must be vigilant for ascending infections when gangrene is present.