The Effectiveness of FRAME FR for AVF Repair in High-Flow Reduction & Stabilization, A Prospective Trial

Arteriovenous Fistula Clinical Trial

— FRAME  

Official title:

The Effectiveness of FRAME FR for ArterioVenous Fistula Repair in High-Flow Reduction, A Prospective, Monocenter Controlled Trial

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT04795401
• Other study ID #: FRAME-FR
• Status: Active, not recruiting
• Phase: N/A
• Start date: April 6, 2021
• Est. completion date: April 5, 2024

Study information

• Verified date: September 2023
• Source: Fondation Hôpital Saint-Joseph
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Patients with end-stage renal disease require permanent vascular access to enable safe and effective hemodialysis. An arteriovenous fistula (AVF), where a vein is mobilized and connected to an artery in the arm, is considered the gold standard and first choice for vascular access. After fistula creation, the vein is subjected to high pressure and flow, and undergoes remodeling. This includes the possibility of significant dilatation and intimal hyperplasia. Normal AVF flow required for effective dialysis is around 0.6 liters/min or 0.4-0.8 liters/min. However, in at least 20% of patients, excessive remodeling and dilatation of the fistula result in a high flow AVF with >2 liters/min.

High flow fistulas significantly increase the risk for the development of high output cardiac failure, skin breakdown, bleeding, hand ischemia, and other systemic complications. In cases of high flow AVF, venous reconstruction procedures, banding and/or plication, are often required to limit venous diameter and flow. The longevity of this procedure is limited as the reconstructed segment remodels and re-dilates due to ongoing arterial pressure. Banding and plication are both procedures that are designed to increase resistance to flow. Banding is performed by wrapping a segment of polytetrafluoroethylene (PTFE) around the outflow tract of the fistula, or by placing a suture around the fistula near the arterial anastomotic area to create a narrowing. Fistula plication involves narrowing of a short segment of the proximal venous outflow tract, usually accomplished by suturing or stapling the fistula for 2-6 cm. One of the notable systemic effects of a hemodialysis AVF is an acute decrease in systemic vascular resistance with a simultaneous increase in venous return to the heart, and thus an increase of the cardiac output. Cardiac failure occurs more frequently in patients with an access flow QA>2 l/min and CPR≥20%. Another adverse systemic effect of AV fistulas is pulmonary hypertension. The increased flow volume to the heart from an AV fistula yields an increase in pulmonary pressures. This can limit pulmonary vasodilation and result in pulmonary hypertension.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 21
• Est. completion date: April 5, 2024
• Est. primary completion date: April 5, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Patient aged over 18 years

• Patient with a fistula flow >1.5l/min

• Patient with a hemodialysis AVF and heart failure symptoms and who may require a reduction in flow even if <1.5l/min

• Patient whose AVF flows <1.5l/min and who may require a flow reduction for a reduction of edema in case of central vein stenosis or symptom of steal syndrome

• Patient referred by a cardiologist for high output cardiac failure

• Patient who is able and willing to comply with the study follow up requirements

• French speaking patient

• Patient who is affiliated to a social security system

• Patient who is able and willing to give his informed written consent.

Exclusion Criteria:

• Patient with any local near fistula or systemic sign or infection

• Patient with AV Fistula composite (constructed or prosthetic graft and vein

• Patient with stents within the operative portion of the fistula

• Patients with known central venous stenosis or occlusion

• Patients with a hand ischemia

• Patient with wall thickness >2 mm, with separation or thrombus within the operative portion of the fistula that cannot be removed, as determined intraoperatively

• Hypercoagulability, on chronic anticoagulation

• Pregnant and breastfeeding women

• Concomitant life-threatening disease, likely to limit life expectancy to less than two years

• Inability to tolerate or comply with required guideline based upon post-operative drug regimen

• Inability to tolerate or comply with required follow-ups

• Concurrent participation in an interventional (drug or device) study for which the follow-up is not completed

• Patient unable or unwilling to perform all the requested tasks

• Patient under tutorship or curatorship

• Patient deprived of liberty.

Related Conditions & MeSH terms

• Arteriovenous Fistula
• Fistula

Intervention

Device:
• FRAME FR IFU
The surgeon will use the medical device FRAME to perform the plication procedure. The device will be selected and implanted according to the product IFU.

Locations

Country	Name	City	State
France	Groupe Hospitalier Paris Saint-Joseph	Paris

Sponsors (1)

Lead Sponsor	Collaborator
Fondation Hôpital Saint-Joseph

Country where clinical trial is conducted

France, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Fistula flow Evaluation M6	The primary outcome of the research is to evaluate the fistula flow by Doppler Us and the fistula primary patency rate over time.	Month 6
Primary	Fistula flow Evaluation M12	The primary outcome of the research is to evaluate the fistula flow by Doppler Us and the fistula primary patency rate over time	Month12
Secondary	Occurence of safety events	This outcome corresponds to the number of safety events such as death, infection, ongoing steal, recurrent aneurysm, new cephalic arch stenosis, fistula thrombosis.	at 6 and 12 months
Secondary	Evaluation of the functional fistula patency	This ouctome corresponds to functional fistula patency.	at 6 and 12 months
Secondary	Cardiac parameters	CPR = QA/CO ratio	at 12 months
Secondary	Secondary patency	This outcome corresponds to the evaluation of thrombosis and AVF discontinuation at 6 and 12 months.	at 6 and 12 months
Secondary	Patient's Quality of Life SF-36	The SF-36 questionnaire consists of 36 items, which are used to calculate eight subscales: physical functioning (PF), role physical (RP), bodily pain (BP), general health (GH), vitality (VT), social functioning (SF), role emotional (RE), and mental health (MH). The first four scores can be summed to create the physical composite score (PCS), while the last four can be summed to create the mental composite score (MCS). Scores for the SF-36 scales range between 0 and 100, with higher scores indicating a better HRQOL.	at 6 and 12 months
Secondary	Reintervention	This outcome is to evaluate the number of patients who had a surgical or endovascular reintervention at 6 and 12 months.	at 6 and 12 months

External Links

•   Amerling et al. Arteriovenous Fistula Toxicity. Blood Purif 2011; 31: 113-120.
•   Basile et al. The relationship between the flow of arteriovenous fistula and cardiac output in haemodialysis patients
•   Reddy YNV, Obokata M, Dean PG, et al. Long-term cardiovascular changes following creation of arteriovenous fistula in patients with end stage renal disease. Eur Heart J 2017; 38:1913
•   Sheaffer et al. Minimally Invasive Limited Ligation Endoluminal-Assisted Revision (MILLER): A Review of the Available Literature and Brief Overview of Alternate Therapies in Dialysis Associated Steal Syndrome. J. Clin. Med. 2018, 7, 128.