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Updated: Jun 27, 2026
07:11
Surgical Techniques for Catheter Placement and 5/6 Nephrectomy in Murine Models of Peritoneal Dialysis
Published on: July 19, 2018
[How much should dialysis time be increased when catheters are used?]
Nefrologia : Publicacion Oficial De La Sociedad Espanola Nefrologia
|November 20, 2008
Summary
Central venous catheters require longer hemodialysis sessions compared to arteriovenous fistulas. Patients using catheters may need an additional 30-60 minutes of dialysis to achieve adequate dialysis dose (Kt).
Area of Science:
- Nephrology
- Vascular Surgery
- Dialysis Technology
Context:
- Central venous catheters are increasingly used for hemodialysis vascular access.
- Despite advancements, catheters yield lower dialysis doses than native arteriovenous fistulas (AVF).
- Catheter dysfunction, including lower blood flow and line inversion, can impact dialysis efficiency.
Purpose:
- To evaluate the additional dialysis time required when using central venous catheters versus AVF.
- To quantify the impact of blood flow (Qb) and catheter line orientation on dialysis session duration.
Summary:
- A study compared hemodialysis sessions in 48 patients (20 with catheters, 28 with AVF).
- Patients with AVF required increased time at lower Qb settings (30-350 ml/min).
- Central catheter use necessitated longer sessions, with inverted lines requiring significantly more time to reach the target Kt of 45 L.
Impact:
- Findings highlight the extended dialysis time needed for central catheter users.
- Results emphasize the importance of optimal catheter function and AVF use for efficient hemodialysis.
- This study informs clinical practice regarding vascular access choice and dialysis prescription.
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