**6. Conclusion**

Hemodialysis central venous catheters CVCs are commonly used in patients with renal failure requiring dialysis once other vascular options have been exhausted. Long-term catheters should be inserted using the Seldinger technique with a dilator and hemostasis valve under ultrasound guidance and fluoroscopic screening. Tunneled catheters with cuffs may be used both temporarily and permanently. The subcutaneous tunnel and cuff ensure stabilization of their position and limiting the migration of microorganisms on its external surface hence reducing the risk of infections. Finally, it must be emphasized that a well-functioning arteriovenous fistula is the best vascular access inducing the lowest number of complications.
