I am glad to hear that Bella is feeling better already and that you are seeing none of those more worrying signs I asked about. Now it probably wasn't a direct reaction to the vaccine but instead its quite possible that she may have been carrying a GI bug asymptomatically prior to vaccination. Often they will be subclinically fighting off bugs (since they have a naive immune system and a habit of putting everything in their mouths and thus frequently introducing immune challenges for the immune system) unbeknowst to us. But when we administer a vaccine on top of that the immune system gets a little bombarded and we can see that GI bug get ahold.
In this instance, since she is settling, we can consider some supportive care to help her immune system continue to get over this. To start, you can consider putting her on a light/easily digestible diet. Examples of this would be boiled chicken
with rice, boiled white fish with rice, scrambled eggs
(made with water and not milk), or cottage cheese with rice. There are also veterinary prescription diets that can be used in cases of gastroenteritis (ie Hill’s I/D or Royal Canin’s sensitivity). The easily digestible diet will be better tolerated and absorbed by the compromised gut and should get some nutrients in and result in less nausea and diarrhea. You can also feed this as small frequent meals to further decrease the volume of diarrhea she is producing. I usually advise that the diet be continued until the vomiting is settled, and that they are then slowly weaned back to their normal diet over a week.
Since Gi issues can quickly dehydrate a young dog, so we need to keep an eye
on her hydration. To check her hydration status to make sure they are not becoming dehydrated there are a few things we can test. One is whether the eyes appear sunken, if the gums are tacky instead of wet/moist, and whether the pet has a "skin tent" when you lift the skin. To see how to check these parameters for dehydration, you can find a wee video on this HERE (http://www.ehow.com/video_12232503_dog-dehydrated.html). If you are seeing any signs of dehydration already, since she is so young, then you do want to have her seen by the vet before this becomes an additional issue for her (since it is often the dehydration that starts to tap their energy level and depresses them)
If you are concerned that she is becoming dehydrated, you can try and encourage her to drink but offering fresh water or even low-sodium chicken broth. If she isn’t amenable to these and hasn't had any more vomiting, you can syringe feed her pedialyte. Pedialyte is nice (though aim for a flavorless one) because it will get some of those lost electrolytes back into her as well. A typical maintenance rate for hydration in an animal is 48mls per kilogram of weight a day. If you do give syringe pedialyte, this should obviously be divided up into multiple offerings through the day rather then all at once. This value will give you the total she needs for the day and is a good starting point to give you an idea of her daily requirement. (we aren’t calculating losses, so you can add an equivalent volume to match how much diarrhea she is producing). If she vomits when you have given pedialyte, then therapy should be discontinued (since we don’t want vomiting because of our intervention).
So, it does sound like she has had a probably flare up of a GI bug but is getting over it already. So, we can use the above to continue to help her to do so. Of course, if she doesn't settle or keeps vomiting, then we'd want to consider getting the vet involved (since she is young and won't have the same body resources as an adult). You might consider submitting a fecal sample for assessment. The vet will also be able to provide antibiotics if necessary and puppy safe anti-nausea and anti-diarrhea medication (ie Kaolin, Protexin, etc) to slow the diarrhea while clearing the infection.
I hope this information is helpful.
If you need any additional information, do not hesitate to ask!
All the best, *****
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