Active clinical trials for "Arteriovenous Fistula"

This study will investigate how the use of Tranexamic acid and Bacitracin applied to the bleeding site after the hemodialysis fistula needle is removed will affect Time to Clot and Infection Rate

The SAVE Study will evaluate the safety and efficacy of the Venous Window Needle Guide in achieving access of a deep, un-cannulatable arteriovenous fistula to complete hemodialysis as prescribed.

The primary goal of this quality improvement project is to find the optimal surgical conditions for patients undergoing upper arm arteriovenous graft surgery. Currently, there are two anesthetic techniques used in clinical practice. The goal is to standardize future practice and improve the care of patients postoperatively. The two techniques used in conjunction with a brachial plexus block are paravertebral nerve block and subcutaneous infiltration.

To determine if cutting balloon angioplasty combined with DEB angioplasty provides a higher primary patency after treatment of recurrent stenoses compared with cutting balloon angioplasty or angioplasty using DEB alone in the venous outflow AVFs. For cutting balloon angioplasty in venous stenosis, the primary patency after 12 months is 55-60% (9,16) and in recurrent stenoses up to 48%(10). We hypothesise that DEB angioplasty after cutting balloon angioplasty leads to improved primary patency at 12 months.

This study evaluates the addition of Pecs II block to ultrasound-guided supraclavicular brachial plexus block in patients undergoing arteriovenous graft creation surgery. Participants will be randomised into two equal groups, one receiving supraclavicular and pecs II blocks, the other receiving supraclavicular block and sham block (Grade 1).

Dialysis vascular accesses called arteriovenous fistulas ( AVF) are essential to ensure extra-renal purification by hemodialysis for patients with chronic end-stage renal disease. Complications of dialysis AVF cause significant morbidity and hospitalization. Dialysis AVF angioplasties are frequently used to treat stenosis, the 1st complication concerning them and which announces the complete thrombosis which may be the definitive loss of the AVF. Historically performed under X-ray, the progression in the quality of ultrasound scanners allows today to perform this procedure under echo-Doppler guidance and thus to avoid both radiation and the injection of iodinated contrast products and their complications. It is thus possible to preserve residual renal function, a situation with a better prognosis, or to help the maturation of the AVF without precipitating the patient towards dialysis. The procedure can then be less costly, requiring a much lighter infrastructure. The complication rates of ultrasound angioplasty remain poorly known because only a few series have been published. In addition, the evolution of the echo-Doppler parameters of the AVF is unknown during angioplasty and it is difficult to know which are the most reliable to distinguish during the procedure a "good angioplasty gesture" from an incomplete angioplasty to be continued. The proposed study would provide initial insight into the question posed.

The aims of this study are to: Determine the AVF (arteriovenous fistula) survival of patients submitted to MuST compared to those submitted to RL (rope-ladder). Determine the AVF (arteriovenous fistula) complication rate of patients submitted to MuST compared to those submitted to RL (rope-ladder). Analyze the intensity of pain perceived by the patient with each cannulation technique under study.

Cerebral blood flow (CBF) is of paramount importance to human brain function, as the brain relies on a continuous blood supply to meet its energy needs. Blockage of a cerebral blood vessel during neurosurgery, even if transient and short-lived, may result in irreversible brain tissue damage (i.e. stroke) and loss of cortical function, if not identified quickly enough. Laser speckle contrast imaging (LSCI) has been demonstrated to provide the ability to visualize flow in vessels in real time and continuously without the need for contrast agents. In LSCI, the tissue of interest is illuminated with low power laser light at red or near infrared wavelengths and the light reflected from the tissue surface is imaged onto a camera. The resulting images are laser speckle patterns and a computer processes the images to produce speckle contrast images, which are images of the motion within the field of view (ie, blood flow). The purpose of this clinical investigation is to assess the usefulness and accuracy of LSCI compared to ICGA and/or FA during neurovascular surgery. LSCI videos will be recorded automatically intraoperatively in each patient before, during, and after ICGA and/or FA in the same surgical field of view to guarantee comparability of the methods.

The primary objective of this double-blind study is to compare the frequency of primary patency at 6 months in patients with stenosis of arteriovenous fistula (AVF) treated either by conventional angioplasty + angioplasty with balloon impregnated with paclitaxel or by conventional angioplasty + angioplasty with placebo balloon (balloon not impregnated with paclitaxel). The other objectives of the study are: To compare the frequency of primary patency at 3 months and 12 months. To compare the rate of restenosis > 50% at the site of angioplasty at 3, 6 and 12 months. To compare, at 3, 6 and 12 months, the proportion of patients with arteriovenous fistula deteriorating back to preoperative flow rate (within 20% of preoperative flow rate). To compare, at 3, 6 and 12 months, the proportion of AVF with a flow rate < 500 ml / min. To compare, at 3, 6 and 12 months, the cumulative rate of thrombosis. To compare, at 3, 6 and 12 months, the medical costs related to direct medical care, initial treatments, monitoring, diagnosis and treatments of complications.

Infiltrations from cannulation difficulties result in significant morbidity including loss of vascular access (VA) loss in hemodialysis (HD). Cannulation is reliant on personnel skill and VA characteristics. Surface marking of VA lacks real-time information and traditional ultrasound (US) devices are large, expensive and require skilled operator expertise. Sonic Window© (Analogic Ultrasound, Peabody, MA) is a coronal mode ultrasound device (CMUD) approved for VA cannulation. Study is a single center randomized, prospective pilot study comparing handheld US-guided cannulation of new arteriovenous fistula (AVF) to standard cannulation practices.