I've included a link to a previous thread and I think you'll find Laurie's link to 'Tanya's Guide' to be of help. In the left column you'll find info on Heart Problems........listed under Related Diseases.

Like you I'd be concerned about the subq fluids. Is your cat not eating or drinking on his own? Was he dehydrated when you took him in? With all he's gone thru the past few days, I'm not surprised he's hiding.

Personally, I'd seek out a vet that specializes in heart problems.

Here is a link that might be useful: RF

I am very sorry about Bitta's diagnosis, both renal and cardiac. Did your vet explain to you that hypertrophic cardiomyopathy (HCM) is associated with several cat breeds, including Persians? I strongly urge you to have Bitta evaluated by a veterinary cardiologist to determine the type and extent of cardiac issue she is experiencing and to develop a treatment/management plan for her heart. You should be able to find a cardiologist within reasonable driving distance by Goggling "veterinary cardiologist [the name of your state]". Your current vet is apparently disregarding her heart problems, and, IMO, is putting her at SUBSTANTIAL risk by prescribing such a high volume of fluids to a cat with known cardiac abnormalities.

I almost killed one of my kidney cats a number of years ago by following the vet's prescribed high dose of subQ fluids. Bitsy was pretty severely dehydrated at the time of his initial kidney diagnosis, so the vet told me to give him 300 ml once daily for 5 days to rehydrate him. After the third day's fluid admin, he went into respiratory distress (open-mouth breathing), and I had to rush him to another vet to save him. He was drowning internally ... and he was a much larger cat than Britta with no known cardiac problem.

If Britta were my cat, I would give her absolutely NO MORE than 100 ml of fluids daily, and I would even split that into two, 50 ml admins a day instead of giving it all in one admin. This would put a lot less strain on her heart to process the fluids. I can't understand why your vet prescribed such a high volume of fluids, anyway, since there is little to no indication of dehydration in her bloodwork.

You are certainly not bound or obligated in any way to comply with your vet's prescribed course of treatment if you are uncomfortable with it. You may not be able to undo the potentially fatal effects of overhydration. I got lucky with Bitsy. You may not be so fortunate with Bitta. Bitta is safer if you err on the side of caution.

I assume the vet prescribed Clavamox on the chance that Bitta may have a kidney infection, since there is no indication of systemic infection in her CBC. Was she running a fever in the vet's office?

I urge you to read the thread that annz linked for you above. It will provide you with a lot of important information that there's no need to repeat here.

Please keep us updated on Bitta's condition.

Laurie

I'm with the others. I had an old kitty with renal disease who also had a heart murmur. I gave her no more than 100 ml of fluid daily, per her vet's advice- due to the heart condition. It's too much fluid for them to process with that condition.

I wish you the best of luck, and I hope you will keep us posted.