Welcome to JustAnswer! I am a licensed veterinarian and would be glad to help!
If the proteins are low - this may then be fluid leaking out of the blood vessels (not blood, but clear fluid from low protein) causing a belly full of fluid.This can be from kidney problems or even liver problems leading to low protein levels.Heart disease can also do this.
This link may also help:http://www.petplace.com/dogs/ascites-in-dogs/page1.aspxI hope this information helps and guides you!_____________________________________________________________________Please click "ACCEPT" if the information I have provided has been of help so I receive credit for my work. Bonuses are always welcome and appreciated. Thank you.The above is given for information only. Although I am a licensed veterinarian, I cannot legally prescribe medicines or diagnose your pet's condition without performing a physical exam. If you have concerns about your pet I would highly advise contacting your regular veterinarian.
It would need to first be determined why they are leaking (infection? inflammation?) then attack the underlying cause.
Bloodwork, x-rays, and ultrasound - infectious disease titers such as tick titers.
Heart disease would be determined via an ultrasound of the heart (echocardiogram)
If the fluid isn't stopped through antibiotics and they have decided to quit draining it, would it make her terminal? what do you think the prognosis is?
The prognosis would unfortunately then be poor.
That is hard for me to say without examining your dog - I would make an appointment with your vet - have the tests performed, and decide if there is something we can treat or not treat.
Regular dog food should not be a problem.
An ECHO - not a ECG