Many practitioners also use colloids (either synthetic or natural) in an emergency to expand the intravascular compartment without the risk of fluid overload posed by infusing large volumes of crystalloid fluids. (todaysveterinarynurse.com)
So intravascular volume resuscitation involves using a replacement isotonic crystalloid with a bolus strategy. (veteccsmalltalk.com)
As the patient was not eating, fluid therapy with crystalloids via a different IV catheter to the transfusion was also initiated. (vvs.vet)