Final answer:
The most common factor contributing to bacteremia in dialysis patients, according to the CDC, is vascular access-related infections.
Step-by-step explanation:
Per the Centers for Disease Control and Prevention (CDC), the most common factor contributing to bacteremia in dialysis patients is D) Vascular access-related infections. Vascular accesses, such as catheters used for dialysis, are common life-saving interventions but can be common sites of bloodstream infections. In the healthcare setting, these infections can result from the introduction of bacteria through contaminated medical equipment, including catheters. With estimates from the World Health Organization indicating up to 80,000 catheter-related bloodstream infections annually in the U.S., it's clear that these infections are a significant concern for patient safety, particularly in those with weakened immune systems or in hospitals where drug-resistant bacteria are more prevalent.