What is the potential consequence of connecting needles to the wrong blood lines?

Connecting needles to the wrong blood lines can lead to recirculation, which prevents the effective clearance of toxins and waste products from the patient's bloodstream during treatments like dialysis. When blood lines are improperly connected, the blood may unintentionally circulate back into the patient rather than being properly cleaned by the dialysis machine. This can result in inadequate treatment, leaving toxins in the blood and potentially causing serious health complications. Recognizing the importance of correct blood line connections is vital for ensuring patient safety and treatment efficacy in a clinical setting.