Taken from:
Subcutaneous Fluids in Dogs
Injectable fluids come in various forms, but only a few should be used for subcutaneous administration. Lactated ringers, 0.9% saline, Ringer's, Normosol-R, and Plasmalyte are most commonly used. Fluids containing dextrose or sugar solutions should be avoided. These can result in infection at the site of injection or severe skin irritation resulting in possible necrosis (dead tissue)
This was the information given to me by several vets...To avoid these side effects it is safer to give the Dextrose to them orally and administer fluids using Lactated Ringers...
I sure hope we hear an update soon!