Dialysis access is a vital lifeline for patients with kidney disease who require dialysis treatment. The veins in the arms and central veins in the chest are commonly used to create and maintain reliable access for effective dialysis. Over time, these blood vessels can develop narrowing, blockage, or other complications that may affect dialysis performance and overall health. Regular monitoring, early detection of problems, and timely treatment can help preserve dialysis access, improve treatment efficiency, and support better long-term outcomes.