Comparison of Tesio and LifeCath twin permanent hemodialysis catheters: the VyTes randomized trial

Albert Power, Peter Hill, Seema K Singh, Damien Ashby, David Taube, Neill Duncan

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)


PURPOSE: Central venous catheters for maintenance hemodialysis (HD) are designed to attain the required dialysis dose through sustained high blood flow rates (BFR). The authors studied the immediate and long-term performance and complications of two twin-catheter systems, the Tesio catheter (TC) and the LifeCath Twin (LC), to inform clinical practice.

METHODS: This single-center randomized controlled parallel-group trial allocated 80 incident patients (1:1) to receive either a TC (MedComp) or LC (Vygon). Patients were dialyzed to target BFR 450 mL/min and followed up for 12 months. The primary outcome was achievement of target BFR during the first HD session. Secondary outcomes included thrombotic dysfunction, displacement and catheter-related infection. Catheter dysfunction was defined by a BFR ≤ 250 mL/min.

RESULTS: More LCs reached the primary endpoint (44% vs. 10%, p=0.001) delivering a higher BFR (mean 383±82 vs. 277±79 mL/min, p<0.001). Significant differences in BFR persisted until the fourth dialysis session. Rates of catheter-related bacteremia (0.40 vs. 0.51/1,000 catheter days, p=0.7) and exit site infection were similar between groups (0.24 vs. 0.09/1,000 catheter days, p=0.4). Overall rates of catheter dysfunction were 2.8/1,000 catheter days (95% CI 2.1-3.5), with no differences in thrombolytic lock use although the LC group required more thrombolytic infusions (6 vs. 0, p=0.01).

CONCLUSIONS: The LC can deliver greater BFRs in the first three HD sessions following insertion although this did not translate into differences in performance, dialysis adequacy or complication rates with long-term use. Both catheter types can consistently deliver high BFRs over an extended period of time.

Original languageEnglish
Pages (from-to)108-15
Number of pages8
JournalJournal of Vascular Access
Issue number2
Publication statusPublished - 7 Feb 2014


  • Aged
  • Blood Flow Velocity
  • Catheter-Related Infections
  • Catheterization, Central Venous
  • Central Venous Catheters
  • Equipment Design
  • Female
  • Humans
  • London
  • Male
  • Middle Aged
  • Regional Blood Flow
  • Renal Dialysis
  • Risk Factors
  • Thrombolytic Therapy
  • Time Factors
  • Treatment Outcome
  • Upper Extremity Deep Vein Thrombosis


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