Petunia had a huge point. I just rushed two mid-age rats (20 moz?) this month to the emergency vet with renal issues that mimic severe respiratory issues (not eating or drinking, mouth-breathing, gasping).
Not that they *didn't have *any resp. issues, but it was kidney causing the massive system failure. The one treated for respiratory died on the way home (and yes, the vet contra-indicated for fluids, as in pneumonia, as the OP experienced too). The brother, who received enalapril *only (a CHF med), did a 360 turnaround, and is literally jumping somersaults, eating everything in sight to make up for 2 days without food or water. He was scheduled to be euthanized yesterday, but today I've never seen him feel this good, popcorning like a ratlett.
I've understood that where renal issues are present, CHF is implied .
Does it look like we can make a strong case that respiratory and renal are equal culprits in deterioration of older (esp. male) rats?
Is the scenario likely enough, that we need to establish a protocol for early testing for kidney compromise, for example, urinalysis after rat passes one year of age, and then every 3-6 months?
Which vets have a tail cuff to measure blood pressure (also implicated in kidney disease)?
What about diabetes testing? In hindsight, my passed rat always chewed his feet a lot. The surviving rat did it only last week, when his kidneys started to fail too
http://www.afrma.org/med_diabetes.htm