What is the primary goal of administering saline in cases of myoglobinuria?

The primary goal of administering saline in cases of myoglobinuria is to flush out the pigment. Myoglobinuria occurs when myoglobin, a protein released from damaged skeletal muscle, enters the bloodstream and subsequently the urine. High levels of myoglobin in the urine can lead to kidney injury due to its nephrotoxic effects.

By administering saline, healthcare providers aim to increase urine output, which helps dilute the concentration of myoglobin in the renal tubules. This dilution and increase in urine flow are crucial for preventing tubular obstruction and reducing the risk of acute kidney injury. Flushing out the pigment minimizes the time myoglobin is in contact with renal tissues, promoting kidney function preservation.

The other options, while they might seem relevant, do not align with the primary objective of treatment in this context. For instance, promoting urine retention would be counterproductive since the goal is to eliminate myoglobin. Enhancing blood coagulation is not related, as myoglobinuria primarily concerns renal protection rather than hemostatic processes. Similarly, increasing urine specific gravity does not support the objective of flushing out harmful substances from the kidneys.