It probably can be saved, if you want to put the effort into it and are willing to wait. It won't make the old growths look much better, but you could get it to put out new leads. I would take it out, clean off all dead and dying roots and growths, dust with a little rooting hormone, repot and keep in a medium light area with good humidity. Hold off on water as much as possible till new roots seen. Probably 2 years from getting a bloom if it survives.