How long can one survive on a feeding tube through the stomach?

When my mother was told last year she needed valve replacement surgery for aortic stenosis which had reached the severe stage the cardiologist asked her how long she wanted to live. She replied she still did and wanted more time to see her great grandchildren grow. She was a risk for this surgery due to all sorts of other health issues. She had it and recovered and has improved to a degree. But she still has many health issues which are manageable for now. Some of these stories don't indicate much quality of life and staying alive despite great suffering can be senseless. Some people linger on way past a word from above making the decision. If your family member can articulate the desire to continue to live then of course that is important. But if life just becomes one terrible ailment after another then what is the point of endless suffering. I know I dont want that for my end and will certainly make that point clear to my children. To a degree I have started to.

Hi i wish i had answer !! I'm going to the samething whit My Mom she is 84 and she has Parkinson she stop eating few days ago and i would to know if we should put in Feeding Tube I'm very confuse can any one give me sm advise too !!