Lasix for Kidney Failure?

KateH2b1

I was told that my grandmother is in kidney failure and dying (hours to days). This came about very suddenly. She supposedly had kidney issues for years that was overlooked. She must not have known because I never heard anything about it. She just had blood work a few months ago.

I was told by her DIL (my aunt) that she was on Lasix. It's unclear whether she was on Lasix and then went into kidney failure or if the Lasix came after. She supposedly has edema. It's hard to say because she's overweight and laying in bed. Her left hand definitely has it, but maybe that's because she's dying?

I'm just wondering if she should've beeen taking Lasix or if the Lasix could've sent her into kidney failure? I know it's not supposed to be given to cats with kidney disease, so I'm trying to understand what's going on here.

Additionally, she had complained earlier this year of left sided back pain. She also said the pain was on her left side. She described it as it feeling like a bowling ball rolling into her side. The doctors attributed the back pain to a botched back surgery from a few years ago. Now I'm wondering if it could've been her kidneys. She had tests done (blood work, xrays, and an ultrasound, I think) and if something was going on with her kidneys it was either missed or no one told her. Any thoughts?

Please don't tell me what you think I need to hear, I want the truth. At the very least, I want to be able to learn from this experience.