When treating a patient with a crush injury, which fluids can be used?

When treating a patient with a crush injury, which fluids can be used?

• A. Normal saline
• B. Dextrose solution
• C. Colloids
• D. Whole blood

Answer: (A)

In crush injuries, the priority is rapid, large-volume IV fluids to restore circulating volume and protect the kidneys from injury caused by myoglobin release. Normal saline is ideal because it’s an isotonic crystalloid that quickly expands the extracellular space and improves renal perfusion without introducing potassium or sugars. It helps dilute circulating toxins and supports a urine output aimed at flushing myoglobin from the kidneys. Dextrose solutions are not preferred in the early resuscitation phase because they provide glucose that can drive insulin release and shift potassium into cells, potentially worsening electrolyte imbalances, and they don’t offer the immediate, sodium-rich volume expansion needed to maintain perfusion. Colloids and blood products aren’t first-line for crush injury fluid management unless there’s ongoing large-volume loss or another indication (like hemorrhage); crystalloids remain the standard initial choice. Whole blood is reserved for significant blood loss with hemodynamic instability, not crush injury alone. So, normal saline is the best initial fluid choice to treat a crush injury.

In crush injuries, the priority is rapid, large-volume IV fluids to restore circulating volume and protect the kidneys from injury caused by myoglobin release. Normal saline is ideal because it’s an isotonic crystalloid that quickly expands the extracellular space and improves renal perfusion without introducing potassium or sugars. It helps dilute circulating toxins and supports a urine output aimed at flushing myoglobin from the kidneys.

Dextrose solutions are not preferred in the early resuscitation phase because they provide glucose that can drive insulin release and shift potassium into cells, potentially worsening electrolyte imbalances, and they don’t offer the immediate, sodium-rich volume expansion needed to maintain perfusion. Colloids and blood products aren’t first-line for crush injury fluid management unless there’s ongoing large-volume loss or another indication (like hemorrhage); crystalloids remain the standard initial choice. Whole blood is reserved for significant blood loss with hemodynamic instability, not crush injury alone.

So, normal saline is the best initial fluid choice to treat a crush injury.