PReSeRVE-HD: Observational Study of the Merit HeRO® Graft and Super HeRO® in Patients on Hemodialysis

This study is following patients who have received a special type of dialysis access device called the HeRO Graft or Super HeRO System — used when standard dialysis access (like a fistula or regular graft) is no longer possible due to blocked veins. The study aims to collect real-world data on how well these devices work and how safe they are over time. **You may be eligible if...** - You are 18 or older - You have end-stage kidney disease and are on hemodialysis - You have received a HeRO Graft or Super HeRO System device according to standard instructions - You can provide written consent **You may NOT be eligible if...** - You are having a previously placed HeRO or Super HeRO device revised or replaced (not a new placement) - You have a skin or tissue infection at the device implant site - You have a known or suspected systemic infection, bacteria in the blood, or sepsis Talk to your doctor to see if this trial is right for you.