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Impact of Bevel Orientation on Arteriovenous Fistula Puncture in Hemodialysis

Impact of Bevel Orientation on Arteriovenous Fistula Puncture in Hemodialysis: A Multicenter Randomized Comparative Study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06708338
Acronym
FAVORI
Enrollment
240
Registered
2024-11-27
Start date
2026-01-07
Completion date
2029-06-30
Last updated
2026-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

End-Stage Renal Disease Requiring Haemodialysis

Keywords

arteriovenous fistula, puncture technique, vascular approach

Brief summary

End-stage renal disease (ESRD) is a condition in which the filtration function of the kidneys has deteriorated, necessitating dialysis or transplantation. With an aging population, the number of patients undergoing dialysis for CKD is constantly increasing. There are different types of dialysis treatment: hemodialysis and peritoneal dialysis. Hemodialysis involves exchanges between blood and a dialysate (a liquid used to purify blood) via a dialyzer (artificial filter), coordinated by a generator. This method requires a vascular approach, of which there are 3 types: the arteriovenous fistula (AVF), the arteriovenous graft and the central venous catheter. The AVF remains the vascular access of choice for hemodialysis sessions, and its preservation is an essential objective for patients with CKD. One of the major challenges for AVFs is to achieve a successful puncture, an act performed around 310 times a year per patient, for dialysis performed three times a week with double needles. This repeated procedure can cause damage to the AVF, leading to complications such as stenosis, thrombosis, aneurysm, superficial infection, hematoma, bleeding, parietal rupture or dissection. However, there is no official recommendation on the most conservative puncture technique for AVF. In view of the number of patients concerned and the recurrence of puncture, it would seem essential to evaluate the impact of bevel orientation on the occurrence of complications during dialysis by means of a randomized prospective study.

Interventions

PROCEDURENeedle bevel orientation for arteriovenous fistula puncture

For the duration of the study (24 months from inclusion), the nurse will puncture the AVF according to the patient's randomization arm. Patients will be randomized, according to the minimization technique, in a 1:1 ratio between the following two groups: * Bevel-up group * Bevel-down group

Sponsors

Centre Hospitalier Emile Roux
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

* male or female with Chronic Kidney Disease * patient requiring 4-hour hemodialysis sessions, 3 times per week, in a dialysis center * Native arteriovenous fistula (AVF) (without prosthesis), mature, with no prior puncture, located in the upper limb * First fistula for a hemodialysis patient * Expected duration of dialysis ≥ 1 year * Double-needle dialysis * Hemodialysis possible on AVF * Average AVF flow rate between 500 and 2,000 mL/min * Affiliated with a social security scheme * Free and informed consent

Exclusion criteria

* Auto-dialysis at home * Puncture using the buttonhole technique * Patient requiring AVF puncture with a catheter * Planned transplant within the next 12 months * Previous AVF creation, except for the fistula of interest * Patient with a history of cancer within the past 5 years or active cancer * Patient under court protection or guardianship * Pregnant and breast-feeding women * Patient with psychiatric pathologies or cognitive disorders * Patient follow-up difficult or impossible for geographical or other reasons, at the investigator's discretion

Design outcomes

Primary

MeasureTime frameDescription
Evaluate the impact of needle bevel orientation (up versus down) on the occurrence of AVF complications during dialysis sessions over 12 months in patients with ESRDDuring dialysis sessions over 12 months, from inclusionThe primary endpoint is the number of AVF complications over 12 months. Eight AVF complications will be collected (stenosis, thrombosis, aneurysm or aneurysm rupture, pseudoaneurysm, infection, hematoma, bleeding, rupture and/or parietal dissection).

Secondary

MeasureTime frameDescription
Evaluate, in patients with CKD treated with hemodialysis, the impact of bevel orientation (up versus down) on the occurrence of AVF dysfunction requiring ultrasound during the first 24 months.For 24 months from inclusionTime from insured bipuncture to onset of AVF dysfunction (see complications in primary endpoint) requiring ultrasound over 24 months will be calculated.
Evaluate, in patients with CKD treated with hemodialysis, the impact of bevel orientation (up versus down) on the occurrence of an intervention (surgical or radiointerventional) during the first 24 monthsFor 24 months from inclusionTime from insured bipuncture to onset of AVF dysfunction (see complications in primary endpoint) requiring initial intervention (surgical or radio-interventional) over 24 months will be calculated.
Evaluate, in patients with CKD treated with hemodialysis, the impact of bevel orientation (up versus down) on AVF survival.For 24 months from inclusionThe time between the insured bipuncture and the discontinuation of its use over 24 months by the introduction of hemodialysis sessions via a central venous catheter or another AVF will be calculated
Evaluate, in patients with CKD treated with hemodialysis, the impact of bevel orientation (up versus down) on patient discomfort with fistula pain during and between dialysis sessions over 12 monthsFor 12 months from inclusionPatient discomfort score for AVF pain during and between dialysis sessions, assessed using a simple verbal scale with a score ranging from 0 (pain free) to 4 (unbearable pain), at each session over 12 months
Evaluate, in patients with CKD treated with hemodialysis, the impact of bevel orientation (up versus down) on AVF wall thickening at the puncture site at 6, 12 and 24 months.At 6, 12 and 24 months from inclusionThickening of the AVF wall at the puncture site will be measured in mm by echo-Doppler at 6, 12 and 24 months.
Evaluate caregivers' feedback on the two puncture techniques and any changes in their practice in terms of AVF monitoring.At Month 12 (if at least 4 patients have been included in the center)Feedback from caregivers will be evaluated via a qualitative questionnaire completed every 12 months starting from the fourth patient inclusion in each center. This aims to assess their experience with the two puncture techniques and any impact on their clinical practice.

Countries

France

Contacts

CONTACTDavid SOULIER
david.soulier@ch-lepuy.fr0471043875
CONTACTCamille FARCY
favori@ch-lepuy.fr

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 5, 2026