Transhepatic Hemodialysis Catheter Placement
Overview
Transhepatic hemodialysis catheters should only be used as a last-resort option when all conventional central venous access sites have been exhausted, due to high rates of catheter malfunction and significant complications including life-threatening hemorrhage. 1, 2
Indications
Transhepatic venous access is indicated in the following scenarios:
- Complete occlusion of all conventional central venous sites (internal jugular, subclavian, and femoral veins) in patients requiring hemodialysis 1
- Superior vena cava obstruction combined with inability to access inferior vena cava via translumbar approach 1
- Preservation of a single remaining peripheral venous site for future permanent vascular access creation 2
- Right atrial catheter placement when transhepatic venous approach is the only viable route 1
This approach should be considered only after exhausting collateral neck or chest wall veins, translumbar inferior vena cava access, and femoral venous access options 1.
Technical Approach
Pre-Procedure Planning
- Imaging assessment with ultrasound to identify hepatic vein anatomy and patency 3
- Coagulation parameters should be optimized given hemorrhage risk 2
- Patient positioning in supine position with right arm abducted 4
Step-by-Step Technique
- Ultrasound-guided access of the right hepatic vein through the liver parenchyma, typically via a right lateral intercostal approach 3
- Fluoroscopic guidance to advance guidewire through hepatic vein into the inferior vena cava and ultimately to the right atrium 3
- Tunneled catheter placement with the catheter tip positioned at the cavo-atrial junction 5
- Track embolization at the time of catheter removal is mandatory to prevent exsanguinating hemorrhage 3
Technical Success
Technical success rates approach 100% when performed by experienced operators 2, 3. However, operator expertise is critical for safe placement of these advanced infradiaphragmatic access approaches 5.
Complications and Outcomes
Major Complications
- Catheter malfunction is the most significant limitation, with occlusion rates of 2.4 per 100 catheter-days due to constant catheter tip movement with respiration 1, 6
- Massive intraperitoneal hemorrhage can be fatal; one death was reported in a series of 21 catheters (5% mortality) 2
- Catheter dislodgement requiring replacement occurred in 31% of cases (5 of 16 initial catheters) 2
- Device failure is the most common reason for catheter exchange, with 48% of patients requiring 1-6 exchanges 2
Infection Risk
- Line sepsis rates are relatively low at 0.22 per 100 catheter-days, comparable to tunneled catheters placed via chest veins 1, 6
Catheter Patency
- Mean catheter service interval is only 24-138 days (range 0-599 days), significantly shorter than conventional access 2, 6
- Poor long-term patency due to high rates of late thrombosis limits utility 6
- Kaplan-Meier survival analysis shows no significant difference in patency by patient sex 2
Critical Caveats
- This approach should only be used as an absolute last resort unless limitations of catheter thrombosis can be overcome 6
- Mandatory track embolization must be performed at catheter removal to prevent fatal hemorrhage 3
- Careful patient selection is essential given the 29% complication rate and maintenance issues 2
- Pediatric experience demonstrates safety when performed by experienced operators, though the same precautions apply 3
- Avoid subclavian vein access for hemodialysis catheters per KDOQI guidelines to preserve future permanent access options 7, 1