Near the end, Myrna was suddenly low on sodium and chloride due to chronic diarrhea, and the vomiting that would occur from time to time for whatever number of reasons. In July, it became so chronic that she couldn't hold anything down. When her blood work showed she was low on sodium-and I read that being low on sodium can contribute TO vomiting and diarrhea-I gave her some salt in the food I was feeding her by mouth. This improved her condition within a couple of hours.
While HCM cats do not need added sodium, in this rare instance it was what she needed. But why? Here's a website called Pet Education. Com to tell you why. I've referred to this site before. It's a really good, basic site. Bookmark it and search for additional information. "Sodium and chloride help maintain the balance between fluids inside and outside individual cells of the body...Sodium aids in the transfer of nutrients to cells and the removal of waste products. Chloride helps maintain the proper acid/alkali balance in the body. Chloride is also necessary for the production of hydrochloric acid (HCl) in the stomach which helps in the digestion of protein..."