The trace ketones can either get worse or get better. Resolve quickly or take time. And they can happen or occur again, when the same or similar conditions present themselves.
Sometimes, if you catch the ketones early enough, it can be quickly resolved.
When you are fighting ketones, you are trying to eliminate/get rid of/ reverse the 3 main causes of their formation. How successful you are at doing that determines how quickly or slowly the ketones can be resolved.
The 3 main causes are 1. lack of food (or not enough), 2. lack of insulin (or not enough) and 3. presence of some type of infection or inflammation. Dehydration can make the presence of ketones worse, because when a cat's body is dehydrated, there are not the fluids needed for those waste products to be filtered out of the blood by the kidneys.
It's why subq (subcutaneous) fluid therapy is an important part of treating ketones. Adding water to the food, or syringing small quantities of water into a cat's mouth cheek pouches can also help re-hydrate a cat. Or putting out a dish of some sort of low-sodium broth or calm juice could help too.
Sometimes a cat is not very interested in drinking water, but some chicken broth may be tempting to them. It's easy and quick to boil up a bit of chicken thigh (dark meat is more flavorful) in a bit of water and let your cat drink some of that water. Cut up the piece of chicken into small pieces, and use as a treat or topper on the food. Excess pieces of chicken can be frozen.
Tools/medications for fighting ketones include:
- food and plenty of it (so the fat and muscle cells are not cannibalized for energy)
- insulin and plenty of it (so the body can process that food)
- antibiotics (to treat the infection/inflammation)
- anti-nausea meds (so cat feels like eating. upset stomach means no one wants food)
- appetite stimulant (to get cat to eat on their own)
- fluids (to re-hydrate)
- pain medications (if cause of not eating is from something like pancreatitis)
- assist feeding or hand feeding (if cat will not eat on their own)
I'm sure I have forgotten to mention some things. Hopefully if I have, someone else will chime in on this thread.