American Association of Veterinary State Boards (AAVSB) Practice Exam 2026 – Complete All-in-One Guide for Exam Success!

In hypovolemic shock the central problem is a loss of circulating blood volume, which drops preload and leads to inadequate tissue perfusion. The fastest and most effective way to reverse this is to restore intravascular volume with intravenous fluids. Giving isotonic crystalloids in rapid boluses increases venous return, stretches the heart enough to boost stroke volume, and improves cardiac output and tissue perfusion. In dogs, start with a balanced crystalloid (such as LRS or similar) at about 10–20 mL/kg and reassess quickly after each bolus to avoid overhydration. This approach directly addresses the deficit causing shock, restoring perfusion and buying time to manage the underlying cause, such as ongoing blood loss. While keeping the patient warm and providing analgesia are important parts of supportive care, they do not fix the underlying volume deficit as rapidly as IV fluids. Corticosteroids are not indicated for acute hypovolemic shock and won’t improve the immediate perfusion.