At Emmy’s age, we do need to tread with care. Vomiting and diarrhea together can quickly dehydrate our cats and anorexia can lead to secondary liver complications. Now based on the signs we are seeing, we do have a few concerns. Common causes we need to consider include bacterial or viral gastroenteritis, pancreatitis, parasites/protozoa infections, general dietary indiscretions, and ingestion of harmful items (ie toxins, plants, non-edible items). As well, at her age, we’d also have to be wary of GI signs secondary to organ dysfunction (ie kidney, liver), metabolic issues, and even cancer.
With this all in mind, I am surprised to hear that her vet didn't treat her with anything for her nausea. Especially as it will be the trigger for her vomiting before and her anorexia now. Therefore, I have to say that it'd be ideal to ring them about dispensing anti-nausea medication +/- an appetite stimulant. Otherwise at the very least we'd want to consider treating her with an antacid. Common pet safe OTC ones we can use include Pepcid (More Info/Dose @http://www.petplace.com/article/drug-library/library/over-the-counter/famotidine-pepcid), or Tagamet (More Info/Dose Here @ http://www.petplace.com/article/drug-library/library/over-the-counter/cimetidine-hcl-tagamet). Whichever you choose, we’d give this 20 minutes before offering food to allow absorption. Of course, do check with her vet before use if she has any known health issues or is on any medications you didn’t mention. As well, if you try this and find her nausea too severe to keep it down, then that is usually a red flag that we need her vet to bypass her mouth with injectable anti-vomiting medication.
Once that has had time to absorb and she is steadier on her stomach, you can consider starting her on a light/easily digestible diet. Start with a small volume (a spoonful). Examples you can use are with boiled chicken, boiled white fish, scrambled eggs, or meat baby food (as long as its garlic/onion free). There are also OTC vet diets that can be used (ie Hill’s I/D or Royal Canin’s sensitivity) too. When you offer that spoonful, give her 30 minutes to settle. If she keeps the food down, you can give a bit more and so on. As her stomach stabilizes, you can offer more. The aim of these diets is that they will be better tolerated/absorbed by the compromised gut. Therefore, it should get more nutrients in and result in less GI upset.
Or if she refuses but isn't vomiting now, we can syringe feed. To syringe feed, we can water down calorie rich diets (ie Hills A/D, Royal Canin Recovery diet, even canned kitten food) or use a liquid diet (ie Clinicare, Catsure). As well, there are paste supplements (ie Nutrical) that can also be used. And these will all get more in per bite even if we cannot get much in. As well, you can give fluids as you have been but be aware that she needs 48ml per kilogram of her weight every 24 hours. This can be divided into multiple offerings over the day, though any more vomiting and we'd have to discontinue this as a treatment.
Finally, since you have not seen blood in those stools, you can consider trying a pet safe anti-diarrheal. As I am sure you appreciate, these would not be a cure if the cause were infectious; but it can still be of benefit. It will reduce diarrhea load, allow the body to absorb more water/nutrients, and soothe the upset gut. In regards ***** ***** options for your wee one, the one we most commonly use is Kaolin/Kaopectate (More Info/Dose @ http://www.petplace.com/article/drug-library/library/over-the-counter/kaolin-and-pectin-kapectolin-k-p). This is available OTC at most pharmacies. Otherwise, Propectalin, Canikur, Fast Balance, and Protexin Pro-Fiber (which is available OTC at vets, pet stores, and even Amazon) would be another option. All will slow diarrhea and those last ones have the added bonus of providing support to the delicate good GI bacteria. So, these can be used as a short-term means of soothing this upset GI.
Overall, a wide range of agents could trigger the signs we are seeing. Therefore, in her case, we’d want to start supportive care to settle her stomach. If she cannot keep that or water down, appears dehydrated already, or doesn’t respond to the above within 12-24 hours; then we'd want to revisit her vet They can reassess her, check bloods for organ issues +/- an ultrasound if they do suspect another underlying issue. Depending on their findings, her vet can treat her with injectable anti-vomiting medication, appetite stimulants, fluids, +/- antibiotics to settle this and get her back feeling like herself.
Please take care,
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