Hi Aimeth and welcome,
You are not alone, there are other wives here with husbands undergoing chemo for metastasized bladder cancer here, and some men and women who are dealing with it themselves.
The prognosis is related to whether the new treatment will work, and there is no way to tell that yet. Because the first combination of drugs failed to halt the cancer- as seen in the lymph nodes in the area of the bladder, they are following it with MVAC, which is a heavier combination than Gemzar and cisplatin. It is known as the "mother of all chemos' when it comes to bladder cancer treatments...and is not easy to take. If it works it will be worth it, buying your husband some more time, and hopefully quality time.
Only your husband can say if the treatments are worth going through, and since he is choosing to take the new recommended treatments it shows he's still up to continuing to fight this.
As a caregiver, it's extremely hard to see our loved one suffering, my heart goes out to you. The best thing is to take things one day at a time; be very careful to avoid infection.
Lymph node involvement is more treatable than if it were in another organ or bone, and sometimes those whose cancer is confined to the lymph nodes and respond to chemo can have a good remission. I hope so for you.
Wendy