Treatment FAQ

how long after radioactive iodine treatment will cat stabiliz

by Jamel McLaughlin Published 2 years ago Updated 2 years ago

Your cat is stabilised for 3-4 weeks on tablets before having the thyroid glands surgically removed under general anaesthetic (thyroidectomy). If both glands are successfully removed, surgery provides a lifelong cure.

Full Answer

How long does it take for radioactive iodine to work on cats?

The cat will be in isolation for 3-8 days. 95% of the radioactive iodine is excreted via the cat’s urine, with lesser amounts through the feces. Exposure to radioactive urine poses risks to veterinary staff and caregivers; therefore careful removal of urine is necessary at an approved facility.

What follow-ups do cats need after radioiodine treatment?

What about follow-ups with your vet? After their radio-iodine treatment, your cat will need some monitoring from your own vet – such as periodic clinical examinations, blood and urine tests, and blood pressure estimation.

Did the radioactive treatment work for my Cat?

I can say the radioactive treatment worked very well, and she went on the upswing pretty quickly. Her weight is back up and she is doing great.I hope your kitty gets better soon.

Can a cat still have hyperthyroidism after radioiodine treatment?

Under 1% of cats treated with radio-iodine will still be hyperthyroid 6 months later. If this is the case with your cat, we’ll schedule a second treatment (within your initial fee) which will almost provide the cure. However, a very small proportion still won’t respond, and we wouldn’t normally offer a third treatment.

What happens after radioactive iodine treatment for cats?

There are almost no side effects from radioiodine treatment. When your cat returns home, there may be a readjustment period while your cat's thyroid returns to normal function. Your cat may be quieter and less active . This is due to the metabolic rate returning to normal.

How quickly does radioactive iodine work on cats?

Most hyperthyroid cats respond fully to a single injection with radio-iodine. Their hyperthyroidism won't come back, and they don't need ongoing medication. Most cats respond to treatment within weeks, although some take up to 6 months to gain the full benefit.

Can I be around my pets after radioactive iodine treatment?

It is safe to be around your cats after you are treated with radioiodine therapy because even if they are in your lap, the exposure is low. People do sweat out the radioiodine, but if you wash your hands regularly, that is very effective in washing away the small amount of contamination on your hands.

How long does it take to recover from radioactive iodine treatment?

You may have short term changes to your taste and smell. This may not start until you get home. It usually gets better within 4 to 8 weeks. It can help to drink plenty of fluids after your treatment.

Can my cat be around other cats after radioactive iodine treatment?

GUIDELINES FOR CAT OWNERS AFTER RADIOIODINE THERAPY. Cats treated with radioiodine (I-131) have a low level of radioactivity following discharge from the hospital. This level is sufficiently low that complete isolation of the cat from people is not required.

Can I touch my cat after radioactive iodine treatment?

Your cat may be slightly woozy when you pick them up. For the first two weeks after I-131: Keep your cat indoors or supervised when outside to prevent contact with other people. Limit close contact (closer than 1 foot) to one hour per day.

How long to stay away from pets after radioactive iodine?

Here are some ways to minimize radiation risks to other people (and pets) after you have had RAI treatment: Stay at least six feet away from other people, including members of the public, family members, and co-workers, for three to 11 days.

Can cats recover from hyperthyroidism?

Fortunately, the vast majority of cats that develop hyperthyroidism can be treated very successfully and most cats will make a complete recovery.

Are cats sensitive to radiation?

Cats are generally more resistant to radiation effects of the skin. Most cats will have hair loss and dry flaking of the skin which may itch. It is still important to prevent your cat from further irritating the area (E-collar).

What is the most common complication of radioiodine therapy?

The most common adverse reaction to medical therapy was a rash in 8 patients, followed by neutropaenia (neutrophils < 1.0 × 109/L) in 6 patients. LFT derangement was reported in 3 patients taking PTU and 1 patient taking carbimazole.

How successful is radioactive iodine treatment?

Conclusion: Radioactive iodine treatment is an effective modality for definitive treatment of hyperthyroidism with long-term cure approaching 80%.

Can hyperthyroidism come back after radioactive iodine?

Once hypothyroidism has been achieved, it is usually irreversible with the patient requiring lifelong thyroid replacement. Recurrence of hyperthyroidism after RAI therapy may be due to inadequate dosing or early Marine Lenhart syndrome.

How long does radioactive iodine last?

Radioactive iodine has a half life of about eight days. This means, after eight days, half of it will have decayed into other elements. After 16 days only one quarter remains, etc., etc. What the doctor is trying to do is to let the radioiodine decay to a safe level.

Why do animals get healthier from radiation?

So instead of forming cancers and mutations the animals get healthier because of there immune systems eliminating damaged cells.

How long before radioactive iodine treatment can cats stop methimazole?

Stop medications and/or special diets: The cat will stop methimazole (Tapazole) or carbimazole or Hills Y/D (a prescription diet low in iodine) 7-10 days before radioactive iodine treatment.

What is the treatment for iodine in cats?

Radioactive Iodine Treatment (I-131) For Cats. Radioactive iodine (radioiodine or I-131) is used in the treatment of hyperthyroidism which is the most common endocrine (hormonal) disorder to affect cats. It is estimated that 10% of cats over ten of cats over the age of ten will develop the disease. The disease is caused by a benign, ...

How does radioactive treatment work for cats?

How does radioactive treatment work? The thyroid gland uses iodine-which is in many types of food to make the thyroid hormones. Cats with hyperthyroidism have abnormal and hyperactive thyroid tissue as well as atrophied healthy thyroid tissue. I-131 is a radioactive form of iodine, which the diseased thyroid takes up.

What is cardiac thyrotoxicosis in cats?

Collectively called cardiac thyrotoxicosis. These are late manifestations of hyperthyroidism which highlight the importance of early diagnosis and bi-annual health checks in cats over the age of 7. High blood pressure (hypertension) is another common side effect of hyperthyroidism in cats.

What is the I-131 in cats?

I-131 is a radioactive form of iodine, which the diseased thyroid takes up . Penetration is only 1-2 mm deep, which spares the underlying healthy thyroid cells. Your veterinarian will refer your cat to a specialist veterinary centre for treatment.

How to treat hyperthyroidism in cats?

There are several treatment options for cats with hyperthyroidism which include: Prescription diet. Hills y/d is low in iodine, which is required by the thyroid gland to produce its hormones, low iodene=reduced hormone production. It can take a few weeks for this food to take effect. Medications.

How long is a cat in isolation?

The cat will be in isolation for 3-8 days. 95% of the radioactive iodine is excreted via the cat’s urine, with lesser amounts through the feces. Exposure to radioactive urine poses risks to veterinary staff and caregivers; therefore careful removal of urine is necessary at an approved facility.

What are the complications of radioiodine therapy?

These complications include cerebrovascular events (i.e., strokes) and the premature exacerbation of pre-existing kidney disease. Luckily these risks will diminish in time following successful radioiodine therapy and a return to a persistently normal thyroid level.

How long does it take for a cat to show signs of hyperthyroidism?

Cats may also continue to show signs of hyperthyroidism, including vomiting and diarrhea, for 3-4 weeks after the radioiodine therapy as the disease continues to resolve. The risk to these cats is the simple fact that many cats in the age range when cats develop hyperthyroidism (8+ years) also develop other diseases.

What is the risk of radioiodine?

1.) Risk to the patient: The radioiodine (I -131) used to treat thyroid disease in people and animals emits both gamma rays and beta particles. The beta particles, which are much more potent forms of radiation, travel an average distance of less than 1 mm. Because of the short distances they travel they never exit the patient ...

Why do cats never exit the patient?

Because of the short distances they travel they never exit the patient and as a result no one other than the patient is at risk from exposure to the beta particles unless they internalized the radioiodine excreted by the patient. In cats > 95% of the radioiodine is excreted in the urine.

Can you put radioactive iodine in your cat's urine?

The good news is that virtually every client will already take steps to avoid this, even when radioactive iodine in their cat's urine is not the motivation.

Does iodine help cats with thyroid disease?

When it comes to survival, the studies that have been done show that cats cured of their thyroid disease by radioactive iodine live much longer (up to twice as long) when compared to hyperthy roid cats treated by methimazole. So in this case the targeted radiation exposure is actually increasing survival for these patients.

Does radioactive iodine cause thyroid cancer?

Hence for a transient period following radioiodine therapy, the patient's urine contains excreted radioiodine which will emit beta particles as it continues to decay. The risks associated with low level ingestion of radioactive iodine relate to an increased risk of developing thyroid cancer.

How long does it take for a cat to be treated with radioiodine?

Typically cats treated with radioiodine in our facility spend a total of 3-6 days with us following the radioiodine therapy.

How long does it take for a cat to be discharged from a hospital?

Typically cats treated with radioiodine in our facility spend a total of 3-6 days with us following the radioiodine therapy. The majority of cats are discharged 3 days following their radioiodine therapy. Some cats with larger tumors require larger radioiodine doses and therefore require longer hospitalization periods prior to release.

What is the leading cause of death in cats?

Administering Subcutaneous Fluids. Hyperthyroidism is a disease of geriatric cats. Chronic kidney disease is common in geriatric cats and is currently the single leading cause of death in cats as a whole. A significant percentage of cats with hyperthyroidism (roughly 30%) have concurrent chronic kidney disease.

What is the hardest part of giving subcutaneous fluids to cats?

Furthermore, while the process of inserting the needle initially seems like the most difficult part of the process, the hardest part about giving subcutaneous fluids is actually preventing the cat from trying to leave the area during the administration process.

Is the rate at which fluids enter the subcutaneous space of the cat directly proportional to the height differential between

Also keep in mind that the rate at which the fluids enter the subcutaneous space of the cat are directly proportional to the height differential between the bag and the cat. The relative height of the fluids bag hanging above the cat in a closet further contributes to a timely completion of the task.

What is the I-131 in cats?

General Information about Feline Hyperthyroidism and I-131 Therapy in Cats. Cat hyperthyroidism is a commonly diagnosed endocrine pathology in older cats. It is caused by a tumor that produces too much feline thyroid hormone. The disease is usually fatal if left untreated. Feline Hyperthyroidism may be treated with medicine, surgery, ...

Does thyro cat damage other tissue?

Does not damage other tissue or organs, including the parathyroid glands. Does not have harmful side effects. Returns thyroid function to normal usually within one month. Is cost effective. Thyro-Cat is an approved specialty facility with State Department of Health and Nuclear Regulatory Commission for use of I-131.

Can Iodine be used for hyperthyroidism in cats?

Surgery may not be effective in removing all of the affected thyroid tissue causing feline hyperthyroidism. Radioactive Iodine (I-131) therapy for feline hyperthyroidism is very effective, has few side effects, is a one-time treatment in over 95% of cats with hyperthyroidism, and does not require administration of pills or anesthesia.

Can cats take tapazole?

The disease is usually fatal if left untreated. Medical therapy for feline hyperthyroidism (methimazole - Tapazole®) is required daily, is a life-long treatment, and does not cure the cat's hyperthyroid condition. The difficulties associated with giving pills to cats often causes stress to both the animal and owner.

Can Iodine 131 be used on cats?

The I-131 hyperthyroid cat treatment is absorbed quickly into the cat's bloodstream and the diseased thyroid tissue. Once in the thyroid, it destroys the overactive portions of the thyroid gland. Radioactive Iodine I-131 feline hyperthyroidism treatment has the following advantages over medical and surgical treatments for feline hyperthyroidism:

Is I-131 safe for cats?

It is as easy as one injection just under the skin, much like a routine feline vaccine. I-131 is safe and effective.

Is radioactive iodine therapy expensive?

The cost of radioactive iodine therapy is similar to the other forms of therapy, and is often less expensive when compared to long term medical therapy or the higher probability of a required second surgery. Prior to making a final decision relative to initiating the I-131 hyperthyroidism therapy, all cats are screened closely for the presence ...

What happens if a cat doesn't take up thyroid?

What is not taken up by the thyroid will be present in the cat's bodily fluids and will primarily be voided in the cat's urine (in those first four days at the vet hospital). What is taken up by the thyroid will be released slowly over the next days/weeks to the other bodily fluids which is why they have the precautions that you describe.

Why is my cat being separated for 4 days?

One of the reasons the cat was held for four days was to allow for much of the radioactive 131 I to be excreted in urine so that the amount of external radiation exposure is significantly reduced.

How to control radiation exposure?

The three ways that we control exposures to external sources of radiation are time, distance, and shielding. Reduce the time near a source, increase the distance from the source, or use some sort of radiation absorbing shielding between you and the source of radiation and you will reduce your radiation dose .

Is cat litter radioactive?

Further, the litter will be radioactive as most of the radioactive iodine will be excreted via this route. I am certain that your veterinarian probably told you to take care when handling the litter and to wash your hands thoroughly after handling litter, the cat, and items that the cat came into contact with.

Does a cat have radioactive iodine?

Now let's deal with the issue of radioactive iodine released by the cat, which I believe is actually the bigger concern. All bodily fluids in the cat will have trace amounts of radioactive material within them, but it will be most prevalent within the urine.

Does iodine make cats drool?

I have a cat also and I know when she is happy and purring while sitting on my lap getting strokes, she drools. In a cat treated with radioactive iodine, the drool will contain radioactive materials. Cats also sweat through their paws and the sweat will have trace amounts of radioactive iodine.

Does 131 I cause thyroid issues?

What they are trying to prevent is the intake (ingestion, etc.) of the radioactive iodine into your body because, just like the cat, any 131 I intake you have will result in an uptake by your thyroid and in larger quantities could result in significant thyroid dose.

How long does a cat have to be hospitalized for radiation?

One of the requirements of the treatment is that the cat has to be hospitalized for 3-5 days, until she has reached the safe and legal level of radiation release. The length of the stay varies by state and is governed by Nuclear Regulatory Commission guidelines.

Why do cats need I-131?

The reason this is done is because thyroid disease can mask kidney disease. The medication trial is designed to determine whether the cat’s kidneys will still perform once the thyroid is under control.

Why does my cat have thyroid problems?

It is caused by an excess production of thyroid hormones, which are produced by the thyroid gland, located inside the cat’s neck. Thyroid hormones affect nearly all organs, which is why thyroid disease can sometimes cause secondary problems such as hypertension, heart and kidney disease.

What is radiocat hyperthyroidism?

Hyperthyroidism is a common disease that typically affects middle-aged and older cats.

Is Radiocat the same as Blue Pearl?

March 19, 2018 at 5:52 pm (3 years ago) Radiocat and Blue Pearl are separate entities and should not be considered as the same level of treatment or care. Radiocat is exclusively a treatment center for hyperthyroidism in cats. They have treated more cases than anyone in the world.

Is atenolol safe for cats?

Atenolol wasn’t developed for cats, it was developed for humans. Our old school vet didn’t agree the side effects were from the meds, and maybe some cats do OK, but definitely not ours. We have the luxury of working from home, so we can follow his activity very closely and he’s definitely better off the meds.

Can cats get hypothyroidism?

October 10, 2017 at 5:29 am (4 years ago) Some cats can become hypothyroid after the radioactive iodine treatment, which may be causing her lethargy and sluggishness. It’s usually temporary, although in rare cases, cats may need medication if it does not resolve after a few weeks.

How long does it take for iodine to go away from cats?

We were told that 90% of the Radioactive Iodine is gone from the cat in two days. The remainder is gone in about the next two months or so. You would actually have to ingest the cats waste for it to be harmful to you. Some places realize that the stress of being away from home for so long is not good for older cats.

Why is radioactive iodine not working?

The only reasons it may not work is an inadequate dose given or some other medication interfering and possibly a cancerous tumor (less that 1% they say) which requires a dose ~ 10 times the amount .

How long did Keefer die from radioactive iodine?

Unfortunately Keefer was given an inadequate dose of Radioactive Iodine and he died 25 days later. We were told we would see some change for the good in about a month.

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