About 6.9 per 100,000 US citizens will have a fistula in 10 years. The incidence was higher in Hispanic or Latino and lower in African Americans. Male sex, advanced age, and hepatitis c virus (HCV) positivity were statistically significant risk factors independently associated with fistula. Fistulas are more common at older ages when people get dialysis for chronic renal failure, whereas AVFs are more common in younger individuals with a history of cancer radiation or surgery and when patients start outpatient hemodialysis as opposed to inpatient hemodialysis.
The presence of peripheral edema is a key diagnostic criterion in patients with the clinical suspicion of AV fistula. The presence of an indwelling venous catheter can also be an important diagnostic clue.
The most common treatment for an arteriovenous fistula is the surgical correction of an obstruction, often performed in a minimally invasive fashion with use of the autogenous vein as a vascular graft. An anastomosis is commonly placed to correct fistulas caused by hemodialysis access. A vascular graft can be placed to correct a malperfused fistula caused by atherosclerosis. More than 90% of all vascular access placements in hemodialysis patients are performed with the use of AVGs as a vascular graft.
Data from a recent study demonstrated satisfactory results regarding a variety of fistula indications and the absence of complications or recurrences. We did not observe a progressive narrowing of the fistula between the years analyzed.
A fistular access can be built in about 74% patients, with a low-mortality rate (less than 2% of bypass procedures are required) if correct use is made of the bypass technique. The risk of developing an access stenosis is low with this simple technique, and the technique should be used routinely in all patients undergoing vascular surgery. A single access can be used on average every second day for an average of about 2 weeks.
These data show no association between the presence of an arteriovenous fistula and its cause. There does not appear to be some sort of "artery to vein fistula syndrome." The patient's underlying vascular or connective tissue disorders are thought to be responsible for the development of an arteriovenous fistula.
It is important to note, however, that when a person uses a CVC, the cannula may slowly pull through the tissue of the arterial wall, and the blood vessels and nerves of the body can continue to communicate as new blood vessels grow and expand in size. This can occur in as little as one week after a successful implantation. Consequently, the actual vascular access placement could be occurring after 2 to 3 months.
These recent advances in the field of EVTs and a new, biocompatible material are definitely expanding the choice of EVT options which will facilitate patients in selecting their best options. The new EVT devices seem to combine the ideal of biocompatibility with mechanical stability and the low cost of conventional EVTs. While most data on EVT durability are related to EVTs implanted by surgical methods, clinical trials, with EVTs implanted in percutaneous fenestrations, are expanding their patient numbers exponentially over time and they seem to provide satisfactory and acceptable midterm patency rates.
We observed a high incidence of AVF with a primary malignancy or traumatic origin, but a relatively small incidence of secondary AVF following radiotherapy of hematologic cancers.
Using the latest scientific evidence and data to guide their treatment, surgeons are making the decision to use arteriovenous fistula (A/V) for many end-stage kidney disease patients. In some cases, this technique can be lifesaving for renal patients. In other cases, patients can live longer and maybe even healthier lives.
Treatment options for AVF are extremely limited. No new treatments have been specifically validated in clinical trials. However, there have been new advances in other medical disciplines which may influence the management of AVF.
For AVF treatment in older patients, as many as 80% have no long-term treatment complications. This cohort of AVF-treated older patients can be expected to live longer and at a higher level of functioning, given appropriate treatment, care, and access to care.