|Purred: Mon May 1, '06 2:36am PST |
|I am not sure how some of the diagnoses were ruled out. Without cardiac
ultrasound exam I don't think it is possible to rule out cardiomyopathy and
thromboembolism resulting from it, although clinical signs can go a long
way towards ruling out the thromboembolism possibility. Without the MRI, or
possibly a myelogram, it is not possible to rule out spinal injury from
disc disease, trauma or spinal cord tumors. Another possible explanation
for wobbliness in the rear limbs is hypokalemia (low blood potassium),
which is a part of many lab profiles, but not all of them. It is very
likely that this has been checked on and ruled out, but it is another
possible problem. Cats get geriatric vestibular syndrome, which is loss of
vestibular (balance) function, rather acutely. This usually clears up
without treatment within a few days to a few weeks. If both sides are
affected dogs and cats sometimes have a crouched, wobbly walk. If only one
side is affected they sometimes refuse to walk but more commonly circle in
the direction of the affected side when they walk and appear to be very
uncoordinated at the same time. Some pets do not recover fully from this
condition but I can't remember one that didn't make at least reasonable
progress after three or four weeks. An inner ear infection or polyp
affecting the middle ear might produce incoordination like this but they
are not that common in older cats.
I tend to disagree that there is no hope for a spinal cord problem,
especially if it is a ruptured disc that isn't showing up on plain X-rays.
However, you do have to accept that the prognosis is guarded, or worse,
before you pursue expensive testing options like an MRI or myelogram to
rule in or rule out these types of problems. It is a tough choice to make
sometimes in an older cat.
I can't think of any other things to suggest looking for at this time. Good
luck with this. I really hope that
your cat has improved some by now.
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