What action should be taken if a test for sterilant levels in a hemodialysis machine returns positive?

When a test for sterilant levels in a hemodialysis machine returns positive, indicating that there are residual chemicals present that may pose a risk to patient safety, the appropriate action is to conduct another rinse of the system. This additional rinsing is essential to remove the remaining sterilant from the system, ensuring that the machine is safe for use and that no harmful residues will enter the patient's bloodstream during the dialysis procedure.

The rinsing process aids in flushing out any residual chemicals, thereby reducing the potential for adverse reactions or complications that could arise from the presence of sterilants. This action aligns with safety protocols that prioritize patient well-being by ensuring that the equipment used in treatment is properly decontaminated and free from any harmful substances.

In contrast, actions such as calibrating the machine, replacing the dialyzer, or stopping the procedure without addressing the sterilant issue do not effectively resolve the problem of residual chemicals and could compromise patient safety. Rinsing the machine sufficiently addresses the immediate concern and prepares the machine for safe operation.