Ultrasound - bursting bladder

I have to repeat my pelvic ultrasound scan because my bladder wasn't full enough for them to get a clear view. I'm supposed to drink nearly a litre of water an hour before my appointment and hold it until after the scan. I simply can't do this. Maybe I could when I was younger, but I'm 61 and seem to have an over-active bladder anyway. Last time I was told I could drink less and not finish drinking till a bit nearer the time, but obviously I didn't drink enough soon enough. I'll have to keep practising to see what the most I can manage is. Any tips?

[AnnieBrooke]

Eat salty food in the half-day before you begin drinking the water.

[BluCrystal]

Sure... practice not urinating until you MUST go, keeping track of how long you can wait.  This should give you a good idea of the time-scale, as well as perhaps stretch your bladder enough to hold a bit more.