What is the IV shock dose for volume depletion in horses?

• A. 60-70 ml/kg
• B. 80-90 ml/kg
• C. 100-110 ml/kg
• D. 40-50 ml/kg

Answer: (B)

Rapid restoration of circulating volume is the goal when a horse is volume depleted. Crystalloids quickly move from the vascular space into the interstitial space, so a relatively large initial bolus is needed to reexpand the intravascular compartment and improve perfusion. The IV shock dose for horses is about 80–90 ml of isotonic crystalloid per kilogram of body weight given rapidly as a bolus. This amount aims to raise blood pressure and tissue perfusion promptly. After the bolus, reassess perfusion and continue fluid therapy as needed, guided by clinical response and monitoring for signs of overload. Use balanced crystalloids when possible, and tailor toward the individual horse’s condition.