Active clinical trials for "Arteriovenous Fistula"

The main objective of this study is to evaluate and compare the primary patency rate at 12 months in a group of hemodialysis patients operated on by cutting balloon and in a group of hemodialysis patients operated by conventional balloon.

To evaluate the preliminary efficacy of combination of cutting and drug-coated balloon for the treatment of resistant AVF stenosis.

A prospective single-arm well-controlled study to evaluate the safety and effectiveness of a less invasive means of establishing vascular access to facilitate dialysis in patients with end stage renal disease.

This study is a randomized, placebo-controlled, single blind clinical trial. Seventy patients with ESRD on chronic HD and a functioning AVF will be recruited. The following data will be documented on each patient: 1-Age/gender/race/body weight/cause of ESRD 2-Vintage of HD 3-Time since access was placed 4-Type and place of access and blood flow rate of access 5-History of prior access problems 6-Comorbid conditions (Hypertension, coronary artery disease, Diabetes Mellitus, Bleeding problems, peripheral vascular disease). 7-Current medications (Coumadin, Erythropoiesis stimulating agents, heparin, other antiplatelets, digoxin, statins). Patients will be randomized into two groups to receive: Group 1: Ticagrelor 90 mg PO BID Group 2: Placebo drug PO BID.

The primary objective of this study is to evaluate the effect of topically applied heparin in comparison to placebo on suitability of newly constructed primary arteriovenous fistulas in patients planned for haemodialysis at 7th week (± 1 week) after first study drug administration.

To evaluate the safety and efficacy of Paclitaxel Eluting Hemodialysis Shunt Balloon Dilatation Catheter (APERTO) compared with the Balloon Dilatation catheter (OHICHO II) for the treatment of Arteriovenous Fistulae Stenosis in patients undergoing hemodialysis.

This trial is aimed to evaluate the safety and efficacy of DCB in treating AVF stenosis in chinese population.

A cohort including more than 100 maintenance hemodialysis patients will be followed up according to a certain Following-up System of Native Arteriovenous Fistulae (AVF) prospectively. The assessment results of the Following-up System of AVF help the physicians make decisions of AVF surgery and puncture methods. The results of this study would identify the effect of the system on survival of AVF. Other 100 hemodialysis patients from other centers will be treated by routine protocol and compared to the experiment goup.

Background: There are several studies that document the safety and efficacy of the balloon-assisted maturation (BAM) technique. Ultimately, there are also studies that report its possible negative consequences such as fibrosis and restenosis of venous outflow, leading to malfunctioning arteriovenous fistula (AVF). Thus, in an effort to increase the number of primary AVFs, shorten maturation times, and reduce the number of indwelling catheters, we ascertain the BAM technique within this study to optimize access care and maximize use of AVFs. The balloon assisted maturation approach specifically and aggressively dilates the entire usable segment of the AVF. Methods: This is a randomized prospective study conducted in the department of vascular surgery, Mansoura University Hospitals, including patients with hemodialysis access creation between June 2017 and May 2019. Three hundred patients were recruited from a total of 648 primary AVF creation cases. Patients were divided into two groups; Group (A) Balloon assisted maturation (BAM) (n=157) 52.3 % technique had been done while in the other Group (B) the usual maneuver was used (NO BAM) (n=143) 47.7%. Preoperative duplex was done for all cases to assess suitability. Intraoperative venography was the initial step following surgical exposure of the assigned veins to ascertain continuity and unlimited flow of the superficial vein. Balloon dilatation by 1 mm larger than the size of the vein, sparing the spatulated end of the vein followed by post-dilatation venography to reveal any injury and assess the success of dilatation process. All cases were completed as an end to side anastomosis. Patients were followed clinically and radiologically at regular visits in the 2nd, 4th and 6th week post-procedure, assessing the flow rate, vein depth and diameter via duplex US examination. Results: Patients age ranged from 19 to 89 (mean 51.17 ±15.5) years. The average maturation time was 3.7 weeks (SD ± 1.3 w) and 5.91 weeks (SD ± 2.2 w) for the BAM and non-BAM groups, respectively. Eighty-seven cases (88.7 %) with a pre-operative vein diameter of 3 mm or less, that underwent BAM showed early maturation and started dialysis within 2-4 weeks (68 cases 70%). On the other hand, 28 cases (45.2%) with a vein diameter equal or less than 3 mm in the NO BAM group failed to get mature. Both successful functional maturation (95%) and complication rates (9.6 %) were higher among cases of the BAM group compared to 80.4% maturation rate and 5 % complication in the NO BAM group. The higher complication rate may be attributed to the large number of cases. Conclusion: Balloon-assisted maturation has a pivotal role to help the dialysis society meet the goals of the Fistula First Initiative; It can achieve an accelerated functional maturation of AVF in cases of small caliber veins, with access to early dialysis, thus decreasing the indwelling catheter-related complications.

The objective of the study is to collect and evaluate clinical data on patients of the Lifetech Cera™ Vascular Plug System to: confirm the performance confirm the safety identify previously unknown side-effects monitor the identified side-effects (related to the procedures or to the medical devices) identify and analyse emergent risks