Owners can be taught to administer subcutaneous fluids to their cat at home and this can be helpful in maintaining optimal hydration in some patients. Owners can be taught to administer subcutaneous fluids to their cat at home and this can be helpful in maintaining optimal hydration in some patients. A typical regime involves giving 50 to 100 ml Hartmann‘s solution once daily, administered via a giving set and 21 G needle using gravity to aid the flow of the fluid Sarah Caney In Practice 2016;38:10-13 Copyright © British Veterinary Association. All rights reserved.