Carotid Embolic Protection: Techniques and Results
Richard R Heuser, Giancarlo Biamino in Peripheral Vascular Stenting, 1999
This device prevents distal embolization by establishing a retrograde flow in the internal carotid artery (Fig. 10.6). It consists of a 10F guiding catheter with a balloon at its distal tip. This balloon is inflated in the common carotid artery. To avoid blood flow from the external to the internal carotid artery, the external carotid artery is occluded with a separate balloon mounted on a wire which is introduced through the lumen of the guiding catheter. The proximal hub of the guiding catheter is connected with a venous sheath. Due to the pressure difference between the distal internal carotid artery and the venous system a retrograde blood flow is established. A filter located in the arteriovenous shunt prevents embolization of the debris into the venous system.
Embolization for fistulas and arteriovenous malformations
Debabrata Mukherjee, Eric R. Bates, Marco Roffi, Richard A. Lange, David J. Moliterno, Nadia M. Whitehead in Cardiovascular Catheterization and Intervention, 2017
An arteriovenous fistula is an abnormal connection between an artery and a vein. As a consequence, the blood bypasses the capillary bed. The majority of arteriovenous malformations (AVMs) are congenital, but some can be acquired due to trauma, infection, or malignancy. An arte- riovenous fistula (AVF) may be the result of a vascular cath- eter insertion or may be created surgically to provide access for hemodialysis in patients with end-stage kidney failure. AVMs can occur anywhere in the body, including the cen- tral nervous system. Congenital AVMs are present at birth, and although they may be asymptomatic, they always per- sist and do not involute,1, 2 unlike true hemangiomas. AVMs may become symptomatic with age, sometimes at puberty in female patients, during pregnancy, or after trauma. Of special interest are pulmonary AVMs, mostly related to hereditary hemorrhagic telangiectasia (Osler-Weber-Rendu syndrome), a condition that is discussed later in the chapter.
The Urinary System and Its Disorders
Walter F. Stanaszek, Mary J. Stanaszek, Robert J. Holt, Steven Strauss in Understanding Medical Terms, 2020
Renal failure may necessitate dialysis, from the Greek words dia (across) and lysis (dissolution). Peritoneal dialysis (peritoneal lavage) uses the patient's own peritoneum as a semipermeable membrane to remove dissolved wastes. Hemodialysis, on the other hand, cycles the blood from an arteriovenous shunt or fistula to a synthetic membrane where it contacts the dialysate (dialysis solution) for removal of the wastes. Kidney transplant may be the necessary outcome.
Clinical and Pathological Features of Congenital Hepatic Hemangioma in Children: A Retrospective Analysis
Published in Fetal and Pediatric Pathology, 2023
Rong Wen, Zheng-Zhen Zhou, Wei-Jian Chen
Hepatic arteriovenous malformations (AMV) is an abnormal connection between arteries and veins. It typically manifests as an arteriovenous shunt and has some secondary vascular structural changes, such as arterialization of the vein wall and significant intimal changes. Capillary reactive hyperplasia is caused by tissue ischemia, but these blood vessels tend to be cleft-active, the lobule appearance is rougher than that of CH, the inflammatory response is obvious [4].
Effect of hyaluronidases added to different concentrations of bupivacaine on quality of ultrasound-guided supraclavicular brachial plexus block
Published in Egyptian Journal of Anaesthesia, 2021
Tarek Abdel Hay Mostafa, Alaa Mohammed Abo Hagar, Amany Faheem Abdel Salam Omara
The anesthesia for arteriovenous shunt creation varied between general anesthesia, regional anesthesia, and local infiltration. One of the most important advantages of regional anesthesia was sympathetic nerve which enhanced venous dilatation and increased blood flow, prevent thrombosis and fistula failure either intraoperatively or postoperatively. [17]
Related Knowledge Centers
- Aneurysm
- Birth Defect
- Hemodialysis
- Hereditary Hemorrhagic Telangiectasia
- Vein
- Artery
- Pathology
- Injury
- Intracranial Aneurysm
- Cerebral Arteriovenous Malformation