Cats with controlled hyperthyroidism (tapazole) - issues with general anesthesia??

scarlett 001

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I am just curious to hear other people's experiences with general anesthesia for cats that have hyperthyroidism that is well managed and controlled.

Toffee cat (15 years old) who is well managed hyper-t kitty has resorptive lesions in his mouth and needs a dental. The trick is that my other senior cat Duncan (not related to Toffee) went into anaphylactic shock during his routine dental a few months ago and nearly died - everything swelled up and lungs filled with fluid - emergency hospitalization saved his life. It was shocking and dreadful (and a freaky uncommon thing to have had happen). And expensive ($5000+ in emergency vet bills). Understandably, this has made me nervous about Toffee having general anesthesia now (never used to be overly nervous).

Toffee is hyperthyroid but very well controlled/managed for ~ 2 years now - I caught it early during regular bloodwork screening (annual checkup) so he has never had any issues and had only lost 6 ounces of weight when we caught it!! In the past year, a few different vets have listened to his heart and not a hint of a murmur or anything. Toffee is a robust cat in good health (other than the managed hyper-t).

Because of my newfound fears of putting any cat under general, my regular vet is giving me a referral to a great vet who works at a combined vet practice that does emergency care (24 hour) as well as routine vet care. That way, if something goes wrong, Toffee is already in an emergency facility (this is unlikely to be necessary, but I need to do this to alleviate my own fears since other kitty's near-death experience was so recent). I could get an echocardiogram done, but that is probably going over the top as I've heard that well-managed hyper-t kitties with no obvious outward heart issues can do just fine under general anesthesia.

Please if you have had good experiences with general anesthesia and a hyper-t kitty, or know anything about this, or can provide any other advice to alleviate my fears - then please then share what you can with me.

THANK YOU!!
 

dan32

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I agree with your vet to have the dental at a facility that could deal with an emergency situation, should one occur - especially since you are already shell-shocked from a bad experience.  If you are worried about his heart, I think they can add an EKG monitor  to the surgical procedures for an addl charge.

I had a hyper-t cat who was 17 - he took methimazole for years with no issues.  However I lost his brother to anesthesia getting a chest x-ray, so there you go.  I think there is always a risk of something going wrong with anesthesia.

The question is: how bad are his teeth?  
 
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scarlett 001

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I think that those resorptive lesions cause quite a bit of pain. Otherwise, he was good teeth with more mild tartar so I would never bother with a dental just to clean his teeth. I will call that clinic to see if they have a heart monitor.

I just cannot bring myself to make the appointment as that last incident with Duncan really has scarred me for future general anesthesia. What to do, what to do.

There is a dental specialist (not attached to emergency clinic that I have been mentioning) who does have the heart monitor thing but to have the dental there was quoted as $3000. That seems over the top as this does not really require a dental specialist. If I spend that much on the dental to begin with, if there is an emergency then I won't have any money left to deal with it!!

What a dilemma.
 
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scarlett 001

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Just repeating my plea for those who have had their controlled hyper-t kitty get through general anesthesia successfully to please share your story. I am a nervous wreck and need to know that this can go okay. I cannot be the only person out there with a controlled hyper-t kitty that needs general anesthesia. Is it unusual to subject a controlled hyper-t kitty to general anesthesia - am I better to just let live with the pain of resorptive lesions and forget the surgery?? So confused.
 

lcat4

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No one can give you a guarantee that your cat will do well under anesthesia, regardless of the condition of the cat.  It comes down to knowing all you can about the condition of the cat, whether the heart is enlarged, kidney and liver values...and then consider the benefit of the surgery.  We all have horror and success stories to share. 

I have a 16 year old cat with hyperthyroidism, controlled by methimazole, who also has bladder cancer and elevated kidney values.  In February, he underwent bladder surgery and was under anesthesia for a minimum of four hours, far longer than a dental tooth extraction procedure.  He did wonderfully.

I have another cat that has has higher kidney values who required a dental cleaning (not extraction).  Our vet wasn't comfortable performing the dental because of the kidney levels.  I took this cat to the board certified dental vet specialist who did the cleaning without any problems.  He said the issue in using anesthesia in more fragile health situations is following a certain surgical format:  appropriate drug choice, providing fluids, and monitoring/maintaining body temperature (they used a heating pad of some sort).

I googled anesthesia protocols for hyperthyroidism and got an excerpt from a book "Feline Dentistry: Oral Assessment, Treatment, and Preventative Care by Jan Bellows.  I don't have time to restate it, it discussed certain certain precautions to take and drugs to avoid.  If you can't find it, let me know, and I can give a link later.

I do know that having resorbed teeth removed is important to the health of the cat.  We have a very healthy female cat that I just assumed was a slow, picky eater.  Took her to the vet for a regular check up and found two bad teeth.  They were removed, and she is like a different cat.  She's not a picky eater and has more energy and play in her than I ever thought possible.  Clearly the bad teeth were affecting her well being.  For peace of mind, it may be worth it to go to the specialist.  Your quote seems a bit high, but I'm sure it's about supply and demand.  Our procedure for two teeth removed and cleaning, with the dental vet specialist, was a bit over $1000. 
 
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