2018年6月29日 · A pseudoaneurysm typically occurs from trauma, such as repetitive needle sticking in the same location, resulting in blood leaking out of the access and into the surrounding tissue. Aneurysms most often occur in an AV fistula and pseudoaneurysms are more common in AV grafts. However, either type of aneurysm can occur in both types of access.

Valenti et al. recently proposed a classification system based on fistula morphology recognizing three types of aneurysms, Types 1 to 3 being true aneurysms and Type 4 being pseudoaneurysms. Type 1 aneurysms were subdivided into Type 1a, which involves the length of the vein and Type 1b being post-anastomotic.

AV fistulas/grafts can form a aneurysm or pseudoaneurysm which can lead to bleeding and other complications Aneursym: contains all layers of the vessel wall Most are asymptomatic; rarely rupture; More likely in fistula than grafts; Pseudoaneurysm: focal disruption of vessel wall with a collection of blood that is contained

2024年2月17日 · Femoral pseudoaneurysm: Iatrogenic etiologies are the most common cause of a femoral pseudoaneurysm, including arterial access for endovascular procedures, with an incidence of less than 1% and anastomotic failure. The less common noniatrogenic causes include trauma, infection, and pancreatitis with pseudocyst/pancreatic fistula.

AV Fistula Treatment Options • Primary o aneurysmorrhaphy (autologous bypass vs. plication) • Secondary o graft interposition o +/- Angioplasty for outflow stenosis (in conjunction with inflow reduction if high flow rates are present) o +/- stent graft+ as temporizing measure with mandatory revision to follow • Ligation (+/- excision of ...

Venous pseudoaneurysm is a rare complication following arteriovenous fistula and is characterized by the formation of extravascular hematoma following vessel wall defect due to repeated needle puncture which can be diagnosed with help of Doppler ultrasonography and computed tomography (CT) angiogram , .

Arteriovenous fistula (AVF) complications are classified based on fistula outcomes. This review aims to update colour Doppler (CD) and pulse wave Doppler (PWD) roles in managing early and late complications of the native and prosthetic AVF.

Pseudoaneurysm formation is commonly encountered during the life of a dialysis fistula. When these become excessively large or numerous, surgical revision of the graft has been the only treatment option.

2023年3月16日 · A pseudoaneurysm, also known as a “false aneurysm”, occurs when there is a breach to the arterial wall, resulting in an accumulation of blood between the tunica media and tunica adventitia of the artery.

2021年10月22日 · In this chapter, we present pathophysiology, clinical features, diagnosis, and management for patients with dialysis access-related pseudoaneurysms. Because multiple solutions are available, we also highlight the importance of multidisciplinary evaluation approach for pseudoaneurysms, including the assessment by a vascular surgeon.