Which vascular access has the fewest complications?

• A. Arteriovenous graft
• B. Central venous catheter
• C. Synthetic arteriovenous graft
• D. Arteriovenous fistula

Answer: (D)

The main concept here is how complication risks differ among the common hemodialysis access types. An arteriovenous fistula uses your own vessels, connecting an artery to a vein to create a access site. Because there’s no implanted material, it typically has the lowest infection risk and better long-term patency, meaning it stays usable with fewer interventions. These advantages translate into the fewest complications overall compared with other options.

Central venous catheters, which sit inside veins and often carry skin bacteria into the bloodstream, have a high risk of infection and catheter-related bloodstream infections, plus potential vein injury and later central vein stenosis. Grafts use synthetic material to bridge artery and vein; they work quickly but tend to have higher rates of infection and thrombosis and usually require more maintenance procedures than fistulas.

So, among these options, the fistula generally has the best (fewest) complications in the long term.