Re: my cat Hotspur (We're new here.)
> And I wondered the same thing that you are wondering, so IHots
> called the office and the cardiologist said yes, it is RCM that
> has and not HCM and he explained a little about both conditionsand
> just sort of confused me more.If Hotspur does indeed have RCM, then he's certainly an atypical
> He seems okay except for the eatingIt's usually not more than about 12 months, yes. Cats with RCM are
> habits and I keep reading about how the life expectancy after RCM
> diagnosis is what 12 months at most and probably a lot less?
usually in CHF when they're diagnosed and the mean survival time for
cats in CHF is 18 months. Though these are all statistics. Some
cats survive longer and some don't survive as long. What surprises
me about Hotspur's case is that he was asymptomatic for so long.
> Then he said to come backread
> again in May which is also surprising after all the things I've
> about RCM.Not really. Morag's cardiologist said the same thing, but with the
understanding that she would be seen when required by our regular
vet. Frequent ultrasounds are not going to be helpful because there
won't be any improvement, and the cat's regular vet, in consultation
with the cardiologist, can handle tweaking the meds when required.
> On the report that the cardiologist sent over to ourit
> general vet after our last appointment, there is a summary of
> Hotspur's condition. It's at home and I'm at work, but when I get
> home I can type it in a post and if you don't mind, could you read
> and please tell me what you think? It is a short summary and Iwould
> sure appreciate it.Sure, I'd be curious to read it since Hotspur isn't the "norm".
> I read about Morag today and I had to go hide in the bathroom toThank you. She certainly was. I've lost some beautiful cats in my
> cry. She sure was a beautiful girl.
time but Morag's death affected me the most. She had such a strong
personality and spirit and left us much too soon.
- Kearra was dx'd with HCM in 1995 and put on Atenolol. At some point
after that (few years) her murmur disappeared. IIRC she was taken off
Atenolol but kept the aspirin.
In 1999 or 2000 she was dx'd with RCM (we kept up with the
ultrasounds). She was put on Enecard. 3 weeks after her 2001
ultrasound she threw a clot and went into CHF while at the vets.
Up until the day she threw the clot, she had no outward signs of heart disease.
I tend to agree with Sarah -- five year survival with RCM would be very
My own experience -- my Baby Boy was initially diagnosed on August 27th with
HCM, which made sense given his initial symptoms, the ultrasound and the fact
that it's the most common form. A repeat ultrasound done in October looked
more like end-stage RCM to the cardiologist who read it (it was done at my
vet's, he sent it to the cardiologist). I took him to Tuft's Veterinary Hospital
in November, and as it turns out, it's DCM -- and it's very obviously DCM, all
four chambers are markedly dilated.
The point is that as the heart remodels due to the disease, it can look
different depending on what stage the disease is at. I was present at the first
and last ultrasounds, and I can easily see how his diagnosis changed, because
his heart looked completely different 3 weeks ago than it did in August. The
skill of the ultrsound operator has a lot to do with it as well.
How many ultrasounds has Hotspur had? I understand the rationale behind not
repeating ultrasounds, due to costs, especially when there is obvious
hypertrophy of the ventricle which tends to indicate definite HCM. Thanks to an
inheritance from my cat-hating grandmother who died in July (oh, the irony!) I was
able to do the multiple ultrasounds without too much stress financially, and
my God, it was definitely worth it.
Do you know what Hotspur's measurements are? I hope he's feeling better too
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> Kearra was dx'd with HCM in 1995 and put on Atenolol. At somepoint
> after that (few years) her murmur disappeared. IIRC she was takenoff
> Atenolol but kept the aspirin.That's interesting because one hypothesis is that RCM is end stage
> In 1999 or 2000 she was dx'd with RCM (we kept up with the
> ultrasounds). She was put on Enecard. 3 weeks after her 2001
> ultrasound she threw a clot and went into CHF while at the vets.
HCM. With HCM, the ventricular wall is thickened, but with RCM, it
isn't. So to go from HCM to RCM means that the model of the heart
has to have changed drastically.
One interesting point - the resolution of ultrasounds is variable.
Morag was originally diagnosed with HCM when she had the ultrasound
done at the regular vet by a very reputable ultrasound technician.
But when we took her to the cardiologist, she was diagnosed with
RCM. I asked, why was she diagnosed with HCM just a month ago and
now it's RCM? The answer - "here at the university, we have a very
high resolution ultrasound machine", i.e. expensive machine.
The reason she had been diagnosed with HCM originally is that with
RCM, the shape of the ventricle is abnormal. The walls aren't
thickened, but there is fibrous material in the ventricle and the
wall sometimes protrudes inward. The cardiologist drew me a
picture. With the lower resolution machine, where the wall was
bulging inward, it was misinterpreted as the wall being thick
because the resolution of the machine wasn't high enough to
differentiate between wall thickness and wall abnormalities.