Save Shoko: Urgent Help Needed for Vet Care

My cat Shoko was emitted to Veterinary Emergency group for a urinary blockage around midnight last night. He went into cardiac arrest, his kidneys were injured and his potassium levels were at a 9 (3.5 is average). They kept him overnight and have stabilized him but he is still not well enough to come home and they are asking for $2,200 to keep him overnight again otherwise he will need to be euthanized. I’ve used all my resources for the first bill and I could really use some help.