Help with possible Hyper Thyroid/Enlarged Heart

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linda and guinness

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Cross post from Lantus Land...just looking for my opinions/eyes/advice

Posted these facts/questions on my thread yesterday. Re-posting here today for more eyes. Thanks.

Not for sure Hyper-T

T4 test was a 2.5 (I was told this was the high end of normal for a cat his age)
Free T-4 was 56.8 (<50 is normal), but vet felt this might not be the true indicator of Hyper-T.
He was diagnosed with an enlarged heart (a symptom of hyper-T)
And he is CONSTANTLY yowling for food.

Symptoms he is not displaying that are Hyper-T
He hasn't lost any weight
He's not aggressive or unfriendly
His coat is not unkempt or patchy

So, my vet could not give me a definitive answer. She said I could move forward with the radioactive iodine therapy ($1,000+), but she wouldn't recommend just haphazardly putting him on the Tapazole medication. I'm kind of at a standstill right now and don't know what to do. She recommended waiting about 3 months and then testing him again to see what his T4 levels are doing. That's probably what I am going to do at this point.

I plan to call the place that does the radioactive iodine treatment this week and ask some questions about the treatment and what they recommend for a cat that might be borderline. In the meantime, I am doing all I can to help control his enlarged heart issue, starting with getting rid of his Halo Pet Treats which are made with sodium. I just cooked up a bunch of fresh chicken for treats for his BG tests.

Lastly, he's not responding to the insulin, so that makes me wonder about the hyper-t as well. Any experience or thoughts surrounding the hyper-t, our test results or anything else would be greatly appreciated.
 
Some cats do require higher doses of insulin than others; don't lose faith yet. The folks in Lantus will give you good feedback on adjusting the dose.

Monitoring him and re-checking the thyroid makes sense as long as his heart rate and blood pressure are stable and not being adversely affected. Is he on meds to slow his heart and/or reduce his blood pressue? Those could help offset some of the impact of higher thyroid levels while you monitor. Is there a veterinary cardiac specialist anywhere near you available for a consult? That also might help determine if/when you need to intervene with the thyroid.
 
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