View clinical trials related to Arterio-Venous Fistula.
Filter by:The number of hemodialysis patients in the world are increasing. In order to receive a sufficient dialysis, the patients needs a well functioning and stable vascular access - preferably an arteriovenous fistula (AVF). Unfortunately, the AVF has a high incidence of stenosis with percutaneous trans luminal angioplasty (PTA) as the only treatment option and a short lifetime. Little do we know of how to improve the survival of the AVF. With this study we want to explore the effect of far infrared therapy on the stenosis, maturation and survival of the arteriovenous fistula. The investigators will divide the patients into 2 groups: A treatment group and a control group. The treatment group will receive infrared therapy on their fistula during their dialysis session. The control group will not receive any infrared therapy. The investigators hope to reduce the risk of stenosis in the fistula and improve the fistula survival with this treatment. Furthermore, the investigators want to explore the change in several biochemical markers during the treatment with infrared therapy.
For chronic hemodialysis patients, the creation of a well-functioning arteriovenous (AV) fistula is critical for ensuring that patient receive adequate hemodialysis. Unfortunately, the primary failure rate for AV fistulas after surgery is about 40%, and this percentage has not changed despite a number of trials of pharmaceutical agents and biologic agents. A key to success in the development of a useable AV fistula is an adequate arterial and venous diameter in the access forearm. Although exercise is commonly used to increase vessel diameter after AV fistula placement, Investigators are unaware of published studies that report on the effect of exercise prior to AV fistula placement to assist with the maturation of a newly created AV fistula. In this pilot trial, the Principal Investigator will evaluate the feasibility and possible benefits of pre-surgical exercise on forearm AV fistulas.
This is a multicenter post-marketing clinical follow-up study to collect safety and performance data in a prospective cohort of patients who will have undergone coil embolization using the ED Coil and ED Detach Generator v4.
The purpose of this study is to collect information about how the PHIL® Embolic System works in the treatment of intracranial dural arteriovenous fistulas. Data collected in this study will be used to evaluate the safety and probable benefits in treating DAVFs. The PHIL® Embolic System is a Humanitarian Use Device (HUD). The U.S. Food and Drug Administration (FDA) approved the use of the PHIL Embolic System as a HUD in June 2016.
The objective of this registry is to collect observational data under local standard of care and evaluate safety and performance of the Serranator® Alto in treatment of peripheral artery disease (PAD), or dysfunctional native or synthetic arteriovenous dialysis fistulae in a real-world scenario.
This is a prospective single arm study enrolling patients who are scheduled for creation of a new Brachiocephalic or Radiocephalic AV fistula. Up to 80 patients will be enrolled, 50 with upper arm AV fistula and 30 with forearm AV fistula. All patients will be implanted with the VasQ device, a subcutaneous arteriovenous conduit support for vascular access. The follow up period in this study will be for a duration of 12 months, with follow up visits scheduled at 1, 3, 6, 9, and 12 months.
This is a prospective clinical study of the VasQ external support for arteriovenous fistulas. The device is designed to improve fistula outcomes by optimizing the geometrical configuration of the fistula, influencing hemodynamics, minimizing turbulence and promote laminar flow. All patients will be implanted with the VasQ device and will be followed up for a duration of 24 months.
Our study seeks to define the effect of each component of the distal revascularization interval ligation (DRIL) procedure on the in vivo distal blood pressure of patients with ischemic steal, and to determine whether the interval ligation component of the DRIL procedure is necessary or not.
Peripheral regional anesthesia induces a sympathectomy-like effect with neurovascular changes causing increased arterial blood flow and venodilatation . Near-infrared spectroscopy (NIRS) can be applied to different kinds of tissue providing oxygen saturation by detecting the absorption and reflection of near-infrared light . The effect on peripheral tissue oxygenation in patients undergoing arteriovenous fistula revision has not yet been examined. We postulate an increase in tissue oxygenation by sympathicolysis caused by peripheral regional anesthesia that might be the reason for beneficial outcome. The aim of our study was to demonstrate the effect of a supraclavicular plexus block in this group of patients.