Tunneled Dialysis Catheter Placement

Background and indications

A tunneled dialysis catheter is a large-bore central venous catheter (11.5-14.5 French), with a subcutaneous Dacron cuff, inserted into the internal jugular vein and tunneled under chest skin. It is designed for chronic hemodialysis when a native arteriovenous fistula or graft is not yet functional or not feasible.

Indications include: chronic hemodialysis awaiting AV fistula maturation, patients without fistula possibility (exhausted venous capital), prolonged emergency dialysis (> 2-3 weeks), and long-term plasmapheresis or apheresis.

Pre-procedure assessment

Jugular and subclavian venous Doppler, coagulation panel, CBC, and prior vascular access evaluation.

Procedure

Under local anesthesia and ultrasound guidance, the right internal jugular vein is punctured. A subcutaneous tunnel is created from the skin exit site (anterior chest, 5-10 cm from puncture point) to the vein. The catheter is tunneled and the Dacron cuff positioned in the subcutaneous tunnel (promoting healing and catheter fixation). The tip is positioned in the right atrium under fluoroscopy. The procedure takes 30 to 45 minutes.

Results and scientific evidence

Technical success rate 98-100%. Functional patency at 12 months is 50-70%. Tunneled catheters have 2-3 times lower infection rates than non-tunneled catheters. Blood flow rates (300-400 mL/min) are sufficient for effective dialysis.

Risks and complications

Catheter-related infection (1-3/1,000 days), catheter dysfunction (insufficient flow: 10-20% at 6 months, often treatable with fibrinolysis or catheter exchange), central venous thrombosis (5-10%), central venous stenosis (long-term complication potentially compromising future vascular access).

Recovery

Use possible from first post-placement dialysis session. Dacron cuff ensures definitive fixation in 2-3 weeks. Exit site care at each dialysis.

Practical information

The procedure is performed as an outpatient or short inpatient stay depending on the case. It is performed by an interventional radiologist, in coordination with the nephrologist.