Charlie is my 11-year old kitty with a history of urinary blockages. The last two months have been very trying: he started with another urinary blockage after many years of great health on the Royal Canine Urinary S/O diet. The vet unblocked him once, but he reobstructed. He unblocked him again, but Charlie would still not pee. The vet put him on bethanacol twice a day and Charlie was urinating normally. We took him home with a few day's worth of bethanacol.
After we stopped the bethanacol, Charlie seemed to have reobstructed. However, once the vet technician tried expelling some urine from him by pushing on his bladder and couldn't, they checked him into the hospital only to see him urinate at full stream almost immediately. They kept him in observation for the day and then sent him home with about 4 weeks of bethanacol.
He was doing more or less OK with bethanacol, but urinating only once in 24 hours. A few days ago he went for 36 hours without urination again and I took him back. He peed right before I took him, but the vet said I should come in anyway and we should give him extra subcutaneous fluids. We gave him 250 ml of subcutaneous fluids yesterday at noon and he has not urinated since.
I'm waiting to call my vet as soon as they open as they told me I should if this happens. He doesn't seem to be in discomfort, behaves normally, ate his normal wet food this morning, even purrs and plays. The vet said this might be something more serious.
He also did x-rays recently and found no signs he had trauma on the spine that might explain neurological damage that might be making his bladder disfunctional and there was nothing on x-ray that would explain what is going on.