What is the desired outcome of rinsing and priming the extracorporeal circuit with normal saline?

Rinsing and priming the extracorporeal circuit with normal saline is primarily aimed at removing sterilants and air from the system. This process is critical because sterilants can be harmful if introduced into a patient's bloodstream, potentially leading to adverse reactions. Additionally, air bubbles present in the circuit can cause complications such as air embolism when blood is returned to the patient. By thoroughly rinsing the circuit with normal saline, the clinician ensures that any residual sterilants are eliminated and that the circuit is free of air, creating a safe environment for blood treatment during dialysis.

The other options, while important aspects of dialysis or fluid management, do not specifically pertain to the immediate benefit of rinsing and priming the circuit with saline. Dialysate residue removal, conductivity enhancement, and prevention of fluid overload are not the direct goals of this particular procedure, making the removal of sterilants and air the most relevant desired outcome.