Hi there, Doglover!
The answer to all your questions is, of course, "it depends."
First, why the general anesthesia? The urologist will be cutting samples from the bladder lining to send to the pathologist for analysis. Believe me, you would rather be asleep for this!!! Occasionally when just a small section is needed for a re-check it will be done during a cystoscopy, but not often.
As for what to expect afterwards...again, "it depends." It depends on how many samples are taken and how deep the urologist needs to cut to get all of it. Also, for some reason, males seem to have a harder time with the procedure than women, including the need for a catheter after. In my case once I recovered from the anesthetic I was as good as new and didn't have any issues such as lifting...was completely normal.
Your mileage may vary.
Good luck to you
Sara Anne