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Not yet recruitingNCT07649083Updated Jun 16, 2026

Comparison of Tunneled Cuffed Dialysis Catheters Versus Arteriovenous Fistulae in Elderly or Multimorbid Patients

An interventional study of Tunneled cuffed catheter (TCC) will be implanted for chronic haemodialysis treatment and Arteriovenous fistula creation for chronic haemodialysis treatment in End Stage Renal Failure, Hemodialysis, Vascular Access and Fistulas Arteriovenous, sponsored by Medical University of Vienna. Not yet recruiting. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2026-06-16.

Sponsored by Medical University of Vienna · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
220
Allocation
Randomized
Ages
18 Years to 99 Years
Sex
All
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Study summary

Patients are randomly assigned to a study group. Depending on the study group, either an arteriovenous fistula or tunneled cuffed catheter (TCC) will be implanted, followed by continuous evaluation of the patients during the first year after initiating the vascular access. The evaluation includes statistical evaluation of all events, including loss of access, thrombosis, infection, loss of patency, increase in co-morbidities, e.g. congestive heart failure as well as quality of life. The implantation of the TCC is a standard procedure and it will be used only in accordance with the approved instructions of use on subjects who have signed an informed consent form. The surgery is a standard operation and it will be performed by specialized surgeons on subjects who have signed an informed consent form (No grafts will be used; implantation of a standard TCC, used at the Department of Nephrology). Both, an arteriovenous fistula or a TCC, will be used for routine chronic haemodialysis

Read the detailed description

Patients with diagnosed end stage kidney disease and indication for chronic dialysis rely on a well-functioning access for dialysis. For long term haemodialysis there are three possibilities: arteriovenous fistulae, arteriovenous grafts and tunneled cuffed catheters. For the last decades, the preferred form of vascular access for every eligible patient was based on the "Fistula First Breakthrough Initiative", nowadays NVAII (National Vascular Access Improvement Initiative), implemented by the US-American CMS (Centers for Medicare \& Medicaid Services). Although the "fistula first" dogma evolved to the more patient-centered recommendation "right access, for the right patient, at the right time for the right reasons" of the latest KDOQI guidelines from 2019, fistula still is seen as the "better" access compared with tunneled catheters whenever possible. The generally low quality of catheter care in previous retrospective publications make meaningful comparisons between fistula and catheter populations difficult. There are no prospective studies on this subject so far. In this study, we address differences between two dialysis vascular access types in elderly (Age 60 and older) and/or multimorbid patients (Charlson Comorbidity Index score of >6)

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Conditions studied

  • End Stage Renal Failure, Hemodialysis
  • Vascular Access
  • Fistulas Arteriovenous
  • Haemodialysis Complication
  • Haemodialysis Patients
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In context

Renal Insufficiency, Chronic

3,144 studies on the registry are indexed under Renal Insufficiency, Chronic; 704 are open to participants now.

This study's planned enrollment of 220 is above the median of 74 across 2,176 interventional studies indexed under Renal Insufficiency, Chronic.

Browse Renal Insufficiency, Chronic studies →

Lead sponsor

Medical University of Vienna is the lead sponsor of 1,076 studies on the registry; 177 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Aged ≥60 years or \<60 years with a CCI Score >6
  • Patients with CKD G5 A1-3 with indication for hemodialysis
  • Stable clinical condition
  • Eligibility for both arteriovenous fistula on the upper extremities and TCC
  • Availability for follow-up
  • Written informed consent

Exclusion criteria

Exclusion Criteria:

  • Uncontrolled infection and/or CRP >5 mg/dl (normal \<0.5 mg/dl) at screening
  • Poor overall health or malignancy not in remission at screening
  • Major surgery within 12 weeks before screening
  • Pre-existent vascular access
  • Patient not eligible for any one of the vascular access options
  • Endovascular arteriovenous fistula
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
220 participants (estimated)

Study arms

  • Active comparator
    Arteriovenous fistula creation for chronic haemodialysis treatment

    Procedure: Arteriovenous fistula creation for chronic haemodialysis treatment

  • Experimental
    Tunneled cuffed catheter insertion for chronic haemodialysis treatment

    Device: Tunneled cuffed catheter (TCC) will be implanted for chronic haemodialysis treatment

Interventions

  • DeviceTunneled cuffed catheter (TCC) will be implanted for chronic haemodialysis treatment

    In this study we will compare TCCs with arteriovenous fistulas. In our hypothesis, TCCs will be superior to arteriovenous fistulas , because incidence of the main disadvantages of TCC, infection and low flow rates, have been reduced significantly since implantation techniques and product quality of TCC, hygiene protocols and lock solutions for TCC have steadily been improved over the last decade.

  • ProcedureArteriovenous fistula creation for chronic haemodialysis treatment

    In this arm arteriovenous fistulas will be created for chronic haemodialysis treatment.

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What researchers measure

Primary outcomes

  1. The composite primary end-point is any access related complication (loss of access, infection and/or thrombosis)

    Time frame: From enrollment to the end of treatment at 52 weeks

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Study locations

No study locations are listed for this record.

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References and documents

Publications

  • Vachharajani TJ, Moist LM, Glickman MH, Vazquez MA, Polkinghorne KR, Lok CE, Lee TC. Elderly patients with CKD--dilemmas in dialysis therapy and vascular access. Nat Rev Nephrol. 2014 Feb;10(2):116-22. doi: 10.1038/nrneph.2013.256. Epub 2013 Dec 3. PubMed 24296629 ↗
  • Lok CE. Fistula first initiative: advantages and pitfalls. Clin J Am Soc Nephrol. 2007 Sep;2(5):1043-53. doi: 10.2215/CJN.01080307. Epub 2007 Aug 16. No abstract available. PubMed 17702726 ↗
  • Ridao-Cano N, Polo JR, Polo J, Perez-Garcia R, Sanchez M, Gomez-Campdera FJ. Vascular access for dialysis in the elderly. Blood Purif. 2002;20(6):563-8. doi: 10.1159/000066961. PubMed 12566673 ↗
  • Lok CE, Huber TS, Lee T, Shenoy S, Yevzlin AS, Abreo K, Allon M, Asif A, Astor BC, Glickman MH, Graham J, Moist LM, Rajan DK, Roberts C, Vachharajani TJ, Valentini RP; National Kidney Foundation. KDOQI Clinical Practice Guideline for Vascular Access: 2019 Update. Am J Kidney Dis. 2020 Apr;75(4 Suppl 2):S1-S164. doi: 10.1053/j.ajkd.2019.12.001. Epub 2020 Mar 12. PubMed 32778223 ↗
  • Xue JL, Dahl D, Ebben JP, Collins AJ. The association of initial hemodialysis access type with mortality outcomes in elderly Medicare ESRD patients. Am J Kidney Dis. 2003 Nov;42(5):1013-9. doi: 10.1016/j.ajkd.2003.07.004. PubMed 14582045 ↗
  • Coresh J, Selvin E, Stevens LA, Manzi J, Kusek JW, Eggers P, Van Lente F, Levey AS. Prevalence of chronic kidney disease in the United States. JAMA. 2007 Nov 7;298(17):2038-47. doi: 10.1001/jama.298.17.2038. PubMed 17986697 ↗

Individual participant data

Plan to share: Undecided

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07649083
Lead sponsor
Medical University of Vienna
Responsible party
Guerkan SENGOELGE (Assoc. Prof. Priv.-Doz. Dr. med.univ., Medical University of Vienna) — Principal investigator
First posted
Jun 16, 2026
Start date
Aug 1, 2026 (estimated)
Primary completion
Dec 31, 2029 (estimated)
Completion
Dec 31, 2030 (estimated)
Last update
Jun 16, 2026

Study contacts

Gürkan Sengölge, Assoc. Prof
Contact
guerkan.sengoelge@meduniwien.ac.at
+43 1 40400 43890

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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