Bladder cancer and catheter

I've only had 2 catheters in my whole life, first one taken out at hospital when I came round before discharge, and one left in for 8 days, it caused me untold pain and discomfort and left me with a UTI for the first time in my life. 

If you can't produce enough urine at a TWOC appointment then you end up with one back in, the only real way around it is to make sure you drink plenty and can urinate frequently and enough. 

I know it doesn't help much now but obviously if not urinating properly then it can be a much bigger problem, I'd suggest drinking plenty so he can provide enough urine at the next TWOC appointment. 

I only just managed to get mine removed and keep one out, I had to urinate 3 times to reach the required amount but I had been emptying the bag constantly prior to having the catheter out and thought urinating would be easy to pass the threshold required, but how wrong was I. 

It doesn't help that when you have urgency after these things and go so often you tend to drink less for fear of needing to go and not being near a toilet on the way home etc. I find taking a urine bottle with me as a backup just in case helps somewhat. 

Bit if he is not able to empty his bladder fully I'm not sure what else he can do, as they want evidence that the bladder is emptying fully as well. 

It's not a nice situation to be in that's for sure and I really feel for him. 

I've had Foley urethral catheters continuously since late 2018 after treatment of bladder cancer by medium dose radiotherapy in 2017, then two TURBTs in 2018. Initially they were changed every 12 weeks but now it's every 8 weeks or when blocked. I've had to get used to them. My TWOC was passed but I developed sepsis 3 days later, needing another week in hospital. If my bladder is allowed to expand and contract naturally without a catheter it tends to bleed. This is the main reason for me being stuck with the damned things. As Simon has indicated, there are a variety of reasons why prolonged catheter usage may be necessary. A constricted urethra caused by an enlarged prostate is a quite common one in older men. I hope your dad can perform to satisfy the TWOC criteria next week. Best wishes, Ray