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Cat Subaortic Stenosis

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  • cmt42184 <thompsc@msn.com>
    A couple of weeks ago I mentioned to friends that I needed to find a support group or counselor for people with sick cats -- and just after that came upon this
    Message 1 of 3 , Jan 3, 2003
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      A couple of weeks ago I mentioned to friends that I needed to find a
      support group or counselor for people with sick cats -- and just
      after that came upon this group, which seems to be just what the
      doctor ordered!

      My wonderful 8-year-old female kitty Eclipse (Clipsie) was recently
      diagnosed with subaortic stenosis, after a routine checkup revealed a
      heart murmur for the first time in her life. (She has no symptoms of
      anything.) Subaortic stenosis is a muscular thickening of the aorta
      beneath the aortic valve and is what is causing the murmur. There
      was mild left ventricular hypertrophy but good heart muscle
      function. The cardiologist explained that the condition is common in
      dogs but so rare in cats that there is no data on it. Further, it is
      generally a birth defect but evidently not so in Clipsie's case due
      to the recent onset of the murmur. So the cause in unknown, but
      possibly due to an unusual variant of hypertrophic cardiomyopathy.
      Currently Clipsie is getting half of a 25 mg. atenolol tablet daily
      and we are to go back in 2-3 months for another echo to see if it is
      progressing. (The cardiologist did say that most dogs with
      the "moderate" degree of obstruction that Clipsie has generally do
      very well and never become symptomatic -- but Clipsie isn't a dog!)

      Needless to say, I am very worried and upset about this, especially
      because it is a mystery illness and may be progressive. And I am
      dumbfounded because I didn't think lightening could strike four
      times -- but it has! Of the other three cats who have owned me, one
      died suddenly at age two with previously-undiagnosed HCM, and the
      other two had serious and expensive illnesses -- one gastrointestinal
      and one neurological -- which baffled the specialists! So I am no
      stranger to the words "This is a very unusual case" -- and could
      literally write a book about my kitties' medical experiences.

      Although it is very rare, I am wondering if anyone has had any
      experience at all with subaortic stenosis or anything like it that
      they would be willing to share. (I have been reading past postings
      in this group and have already picked up a number of good tips,
      especially about giving medications!)

      Thank you in advance for any help or support you can give!

      Carol and Clipsie
    • bcowell <bcowell@yahoo.com>
      Hi Carol, Sorry to hear about Clipsie, your kitties have not been lucky except to have you as their carer :) As to the murmur, my Bobo was 18 months before
      Message 2 of 3 , Jan 3, 2003
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        Hi Carol,
        Sorry to hear about Clipsie, your kitties have not been lucky except
        to have you as their carer :)
        As to the murmur, my Bobo was 18 months before they heard his murmur,
        which turned out to be due to mitral valve dysplasia (with mitral
        stenosis and mitral regurgitation). According to the UC Davis vets
        the murmur was quite loud, yet Bobo had been checked several times
        before without it being heard. They suggested that it might be
        because most vet clinics are pretty loud and so could easily be
        missed. I am thankful it was found at all.
        If it has a good prognosis in dogs, you may be lucky and find it the
        same in cats. Bobo's dysplasia is also more common in dogs ( and
        humans) but still has a grim prognosis. If he was a human they would
        operate. I feel frustrated by the lack of data for cats too. It's
        scary to have no idea on how this might progress.
        Best wishes for Clipsie,
        Brigitte

        --- In feline-heart@yahoogroups.com, "cmt42184 <thompsc@m...>"
        <thompsc@m...> wrote:
        > A couple of weeks ago I mentioned to friends that I needed to find
        a
        > support group or counselor for people with sick cats -- and just
        > after that came upon this group, which seems to be just what the
        > doctor ordered!
        >
        > My wonderful 8-year-old female kitty Eclipse (Clipsie) was recently
        > diagnosed with subaortic stenosis, after a routine checkup revealed
        a
        > heart murmur for the first time in her life. (She has no symptoms
        of
        > anything.) Subaortic stenosis is a muscular thickening of the
        aorta
        > beneath the aortic valve and is what is causing the murmur. There
        > was mild left ventricular hypertrophy but good heart muscle
        > function. The cardiologist explained that the condition is common
        in
        > dogs but so rare in cats that there is no data on it. Further, it
        is
        > generally a birth defect but evidently not so in Clipsie's case due
        > to the recent onset of the murmur. So the cause in unknown, but
        > possibly due to an unusual variant of hypertrophic cardiomyopathy.
        > Currently Clipsie is getting half of a 25 mg. atenolol tablet daily
        > and we are to go back in 2-3 months for another echo to see if it
        is
        > progressing. (The cardiologist did say that most dogs with
        > the "moderate" degree of obstruction that Clipsie has generally do
        > very well and never become symptomatic -- but Clipsie isn't a dog!)
        >
        > Needless to say, I am very worried and upset about this, especially
        > because it is a mystery illness and may be progressive. And I am
        > dumbfounded because I didn't think lightening could strike four
        > times -- but it has! Of the other three cats who have owned me,
        one
        > died suddenly at age two with previously-undiagnosed HCM, and the
        > other two had serious and expensive illnesses -- one
        gastrointestinal
        > and one neurological -- which baffled the specialists! So I am no
        > stranger to the words "This is a very unusual case" -- and could
        > literally write a book about my kitties' medical experiences.
        >
        > Although it is very rare, I am wondering if anyone has had any
        > experience at all with subaortic stenosis or anything like it that
        > they would be willing to share. (I have been reading past postings
        > in this group and have already picked up a number of good tips,
        > especially about giving medications!)
        >
        > Thank you in advance for any help or support you can give!
        >
        > Carol and Clipsie
      • Rat
        ... Lurker here. My cat Tenshi was diagnosed with supravalvular aortic stenosis about a year and a half ago. We d taken him to the vet right after we
        Message 3 of 3 , Jan 4, 2003
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          <snip>

          > Although it is very rare, I am wondering if anyone has had any
          > experience at all with subaortic stenosis or anything like it that
          > they would be willing to share. (I have been reading past postings
          > in this group and have already picked up a number of good tips,
          > especially about giving medications!)
          >
          > Thank you in advance for any help or support you can give!
          >
          > Carol and Clipsie

          Lurker here.

          My cat Tenshi was diagnosed with supravalvular aortic stenosis
          about a year and a half ago. We'd taken him to the vet right
          after we got him, and the vet discovered a heart murmur and
          suggested an ultrasound. Our cardiologist said the same thing
          yours did: this is very rare in cats and more common in dogs.
          Since there didn't seem to be any damage to Tenshi's heart,
          the vet said to just keep an eye on him and bring him in for
          another ultrasound in a year or so. We just had that about
          a month ago and not only did Tenshi continue to have no damage
          to his heart, but the blood velocity measurement actually went
          down from 5 to 3.8 meters (and this was under stress--Tenshi
          doesn't like getting ultrasounds! :) ). The cardiologist told
          us that this would likely not cause any problem at all and that
          Tenshi will most likely have a normal lifespan.

          I know every cat is different, but I hope this can provide
          some encouragement for you and Clipsie.

          Regards,
          --Robyn

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          Rat - winterhawk@... http://www.magespace.net
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