(of the aorta) a congenital narrowing of a short segment of the aorta. The most common site of coarctation is just beyond the origin of the left subclavian artery from the aorta. This results in high blood pressure (hypertension) in the upper part of the body and arms and low blood pressure in the legs. The defect is corrected surgically.

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  • coarctation — [ koarktasjɔ̃ ] n. f. • 1838; coartation 1478; du lat. coarctatio « action de resserrer » ♦ Pathol. Rétrécissement de l aorte. ● coarctation nom féminin (latin coartatio, onis, action de serrer) Rétrécissement congénital d un canal ou conduit… …   Encyclopédie Universelle

  • Coarctation — Co arc*ta tion, n. [L. coarctatio.] 1. Confinement to a narrow space. [Obs.] Bacon. [1913 Webster] 2. Pressure; that which presses. [Obs.] Ray. [1913 Webster] 3. (Med.) A stricture or narrowing, as of a canal, cavity, or orifice. [1913 Webster] …   The Collaborative International Dictionary of English

  • Coarctation — Coarctation, lat., Einzwängung; coarctiren, einzwängen …   Herders Conversations-Lexikon

  • coarctation — index bondage Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • Coarctation — A narrowing, a stricture, a constriction. Although the best known coarctation is of the aorta, any artery can have a coarctation. The word “coarctation” comes from the Latin “coartare” meaning :to press together.” The sides of the vessel at the… …   Medical dictionary

  • coarctation — noun Etymology: Latin coarctation , coarctatio tightening, from coarctare, coartare to constrict, from co + artare to fix firmly, from artus close, tight; akin to Latin artus joint more at article Date: 1545 a stricture or narrowing especially of …   New Collegiate Dictionary

  • coarctation — (ko ar kta sion) s. f. Terme didactique. Rétrécissement d une cavité, d un conduit. Coarctation de l urètre, etc. ÉTYMOLOGIE    Voy. coarctant …   Dictionnaire de la Langue Française d'Émile Littré

  • Coarctation De L'aorte — Coeur normal La coarctation de l aorte n est pas, stricto sensu, une cardiopathie congénitale bien que très souvent traitée dans ce type de pathologie. Il s agit d un rétrécissement congénital de l aorte se situant à l embouchure du canal… …   Wikipédia en Français

  • Coarctation aortique — ● Coarctation aortique rétrécissement congénital de l aorte, essentiellement localisé dans le thorax, à l origine de la partie descendante de l aorte thoracique, après la naissance de l artère sous clavière …   Encyclopédie Universelle

  • coarctation of aorta infantile type — coarctation of the aorta in which there is cyanosis and diffuse involvement of the aortic isthmus; it is usually seen in infants and is associated with other anomalies such as a patent ductus …   Medical dictionary

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