RE:RE:Boy, am I sorry...I might note just for information, I 've been self-cathing for about 30 months, and I'm required to measure and record each void.
I get the urge to purge with about 350 ml in my bladder, but I can usually hold that. I get waked up regularly with a more urgent urge with about 650 ml., but I can hold that if necessary, too. My bladder has been mapped and can hold up to a well-documented 1600 ml, albeit with some difficulty.
That should give you an idea of how the mistake could have been made. Apparently they worked with average void volumes when they should have been using a much larger maximum volume to determine the dosing and treatment.
Each bladder is different. Your mileage (to the next rest stop) may vary.