Traumatic intestinal fistulas usually occur between two loops of intestine (entero-enteric fistula) or intestine and skin (enterocutaneous fistula). In the cases of veins or arteries, traumatic fistulas usually occur between artery and vein. These are usually referred to as fistulas. Pathological anastomosis results from trauma or disease and may involve veins, arteries, or intestines. Studies have been performed comparing various anastomosis approaches taking into account surgical "time and cost, postoperative anastomotic bleeding, leakage, and stricture". Anastomosis can be performed by hand or with an anastomosis assist device. Surgical anastomosis techniques include Linear Stapled Anastomosis, Hand Sewn Anastomosis, End-to-End Anastomosis (EEA). Examples include arterial anastomosis in bypass surgery, intestinal anastomosis after a piece of intestine has been resected, Roux-en-Y anastomosis and ureteroureterostomy. Surgical anastomosis occurs when segments of intestine, blood vessel, or any other structure are connected together surgically (anastomosed). Anastomoses also form alternative routes around capillary beds in areas that don't need a large blood supply, thus helping regulate systemic blood flow. coronary arteries and cortical branch of cerebral arteries). Arterial anastomosis includes actual arterial anastomosis (e.g., palmar arch, plantar arch) and potential arterial anastomosis (e.g. The circulatory anastomosis is further divided into arterial and venous anastomosis. In circulatory anastomoses, many arteries naturally anastomose with each other for example, the inferior epigastric artery and superior epigastric artery, or the anterior and/or posterior communicating arteries in the Circle of Willis in the brain. It refers to connections between blood vessels or between other tubular structures such as loops of intestine. Thus the -stom- syllable is cognate with that of stoma in botany or stoma in medicine.Īn anastomosis is the connection of two normally divergent structures. The term is used in medicine, biology, mycology, geology, and geography.Īnastomosis: medical or Modern Latin, from Greek ἀναστόμωσις, anastomosis, "outlet, opening", Gr ana- "up, on, upon", stoma "mouth", "to furnish with a mouth". Anastomoses that are abnormal, whether congenital or acquired, are often called fistulas. The reestablishment of an anastomosis that had become blocked is called a reanastomosis. Such a connection may be normal (such as the foramen ovale in a fetus's heart) or abnormal (such as the patent foramen ovale in an adult's heart) it may be acquired (such as an arteriovenous fistula) or innate (such as the arteriovenous shunt of a metarteriole) and it may be natural (such as the aforementioned examples) or artificial (such as a surgical anastomosis). Vein skeleton of a Hydrangea leaf showing anastomoses of veinsĪn anastomosis ( / ə ˌ n æ s t ə ˈ m oʊ s ɪ s/, plural anastomoses) is a connection or opening between two things (especially cavities or passages) that are normally diverging or branching, such as between blood vessels, leaf veins, or streams.
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