Dave, my post op water works were fine for a few weeks. After a couple of months I started with smelly urine and a slow flow. My post op slow flow was caused by the migration of hem o lok clips and a build up of scar tissue at the joint.At three months post RARP a cystoscopy found the problem.
As regards going into retention there are a few options. They could try and get a catheter in. If the urethra is to tight, they may use the camera with a guide wire to get a catheter into the bladder. Another option is to use the camera and guide wire to get a set of dilators through the stricture and then fit a catheter.
I have had all the above done without any anesthetic and they are tolerable.
Most drastic is to have a suprapubic catheter fitted which goes through the tummy wall into the bladder, i did have a shot of morphine for that one and I was still.coming round from a GA.
If you think you are going int retention don't hang about get your self to urology or the emergency department. My flow got down to 0.5mls per second.
Hope you don't need any emergency attention.
Thanks Chris