HeRO graft-The results of the cologne single center study.

Objective: The HeRO graft is a technique for vascular access in patients with limited treatment options; however, the published results with the HeRO graft are diverging. We therefore conducted a single-center study.

Methods: Patient records between July 2014 and February 2020 from Vascular Access Unit of the Department of Vascular and Endovascular Surgery of University Clinic of Cologne (Germany) were reviewed.

Study protocol of a prospective single-arm multicenter clinical study to assess the safety and performance of the aXess hemodialysis graft: The pivotal study.

Background: Arteriovenous grafts (AVGs) are used for patients deemed unsuitable for the creation of an autogenous arteriovenous fistula (AVF) or unable to await maturation of the AVF before starting hemodialysis. However, AVGs are prone to infection and thrombosis resulting in low long-term patency rates. The novel aXess Hemodialysis Graft consists of porous polymeric biomaterial allowing the infiltration by cells and the growth of neotissue, while the graft itself is gradually absorbed, ultimately resulting in a fully functional natural blood vessel.

Gracz fistula is a feasible option after two failed percutaneous arteriovenous fistulae.

Two devices for the creation of an endovascular percutaneous (pAVF) endovascular (endoAVF) arteriovenous fistulae (AVF) are available: the Ellipsys and the WavelinQ-4F systems. The main difference is the location of the anastomosis, making it feasible to use both pAVFs and surgical Gracz-type AVF in an algorithm sequence. A 66-year-old male patient with end-stage kidney disease and HIV was referred for a creation of a dialysis access after failed peritoneal dialysis.

Novel external stenting for reconstruction of high flow arteriovenous fistula.

Background: High-flow arteriovenous fistulae (HF-AVF) may lead to adverse cardiac remodeling in hemodialysis patients. We have investigated whether a novel external stent is safe and effective in reducing and stabilizing flow rates during a 1-year follow-up after HF-AVF reconstruction.

Methods: All patients with HF-AVF (access flow rate ⩾ 1500 ml/min), who underwent HF-AVF reconstruction with external stenting in two centers between June 2018 and May 2020, were included in this retrospective analysis.

The past and the future of vascular access surgery: Creation of percutaneous arteriovenous fistula using Ellipsys vascular access system in a patient with previous ipsilateral Scribner-shunt.

Background: Sixty years after the first description of Scribner-shunt, and 54 years after publication of the first radio-cephalic arterio-venous fistula (AVF), endovascular percutaneous AVF (pAVF) was introduced. We report a successful case of Ellipsys-pAVF creation and use for hemodialysis in a patient with a previous ipsilateral Scribner-shunt.

Case: A 72-year old female patient with chronic kidney disease (CKD), previous right-sided Scribner-shunt and kidney transplant, underwent a successful creation of right-sided Ellipsys-pAVF.

Multicenter Experience with the Surfacer Inside-Out Access Catheter System in Patients with Thoracic Venous Obstruction: Results from the SAVE Registry.

Purpose: To report the device performance and safety for the Surfacer Inside-Out access catheter system in patients with thoracic central venous obstruction (TCVO) requiring central venous access (CVA).

Materials And Methods: Five sites prospectively enrolled 30 patients requiring a tunneled dialysis catheter between February 2017 and September 2018 in the SAVE (Surfacer System to Facilitate Access in Venous Obstructions) registry. Patient demographics, medical history, and type of TCVO were documented at enrollment.

Patency and functionality of radiocephalic arteriovenous fistulas with an external support device (VasQ™): Real-world single-center experience.

Background: The VasQ device was designed to improve the outcome of arteriovenous fistulae by optimizing the hemodynamics of the flow in the juxta-anastomotic region of the arteriovenous fistulae through tailored external support. The aim of the study was to evaluate the impact of the VasQ on outcome of radiocephalic arteriovenous fistulae in a real-world setting.

Methods: This was a single-center, retrospective analysis of patients with either fistula creation before or after dialysis initiation with implantation of the VasQ device during creation of end-to-side radiocephalic arteriovenous fistulae between June 2018 and May 2019.

A Novel Inside-out Access Approach for Hemodialysis Catheter Placement in Patients With Thoracic Central Venous Occlusion.

Rationale & Objective: Left-sided internal jugular and all subclavian central venous catheters (CVCs) cause thoracic central vein occlusions (TCVOs) more often than right-sided internal jugular catheters. To enable right-sided CVC placement in patients with TCVO, an inside-out access (IOA) approach was established at 3 vascular access centers in Europe involving use of a novel IOA device advanced from the right femoral vein. In the current analysis, we assessed the eligibility and success rate of this IOA approach in a cohort of patients with TCVO requiring a tunneled dialysis catheter.

AV fistula creation in paediatric patients: outcome is independent of demographics and fistula type reducing usage of venous catheters.

Purpose: Even though early transplantation is still the first-line therapy in paediatric patients with end-stage renal disease (ESRD), up to 30% of these patients still require haemodialysis (HD). Creating an arteriovenous fistula (AVF) is quite challenging, particularly in children, leading to disproportional use of catheters. In this paper, we describe our experience in the creation of AVF with currently no in-dwelling catheters in children and adolescents on HD.

Thoracic type Ia endoleak: direct percutaneous coil embolization of the aortic arch at the blood entry site after TEVAR and double-chimney stent-grafts.

Objectives: To introduce a novel percutaneous technique to stop blood entry at the lesser aortic arch curvature by coil embolisation in type Ia endoleak after TEVAR.

Methods: A 61-year-old Marfan patient presented with type Ia endoleak of the aortic arch and a growing aortic arch pseudoaneurysm after TEVAR. Multiple preceding operations and interventions made an endovascular approach unsuccessful.

Results of an observational study in carotid surgery using absorbable suture material.

Background: Absorbable sutures are not well accepted for reconstruction in high-pressure arterial segments because the suture line might break and aneurysmal changes could develop. This hypothesis was checked in the clinical setting of carotid surgery.

Methods: The morphology of the carotid artery was evaluated by color-coded ultrasound in four groups of patients: group A, 25 patients who underwent standard carotid endarterectomy and patchplasty, including a transverse plication for which absorbable sutures had been used; group B, 10 patients who underwent eversion endarterectomy and reinsertion using absorbable sutures; group C, 15 patients who underwent standard carotid endarterectomy and patchplasty without a transverse placation; group D, 20 patients who suffered from atherosclerotic disease but did not have previous carotid surgery or other carotid pathology.