The reality is, no dog is going to piss-out 1000 ml of fluids faster than you can get it into him with a bolus dose of IV Fluids.
And hell, if the dog
does piss out a big amount of fluids, CELEBRATE!, because it means his kidneys are now working
And then, guess what? You can run
another bag of fluids in him and
not give anymore dex/solu ... and keep him hydrated
Again, these drugs at that dose are for the VERY short term. ONCE ... maybe TWICE ... but no more
If they make him have to get up and piss, great! That is progress and a big relief!
Jack