coarctation
Học thuậtThân thiện
Definition
- Noun:
- A narrowing or constriction of a vessel or canal: In biology and medicine, "coarctation" refers to the condition of being abnormally narrowed or constricted, particularly of a tubular structure like a blood vessel.
- A congenital narrowing of the aorta: Specifically, it often denotes a congenital heart defect where a segment of the aorta is narrowed, impeding blood flow.
- Tight or narrow compression: A more general sense referring to the act or result of pressing something tightly together, making it narrow.
Usage Examples
- Noun:
- The echocardiogram revealed a coarctation of the aorta in the newborn.
- Surgical repair is often necessary for a severe aortic coarctation.
- The coarctation of the vessel led to increased pressure upstream.
Advanced Usage
- "Coarctation of the aorta": A specific medical term for a congenital condition where the aorta is narrowed.
- Coarctation of the aorta is usually diagnosed in infancy or childhood.
Variants and Related Words
- Coarctate (adj): Pressed or drawn together; contracted. (Primarily a technical/biological term).
- The coarctate pupa is a stage in some insect development.
Synonyms
- Stenosis: Abnormal narrowing of a bodily passage or duct.
- Constriction: The action of making something narrower by pressure or squeezing; a place where this happens.
- Stricture: A restriction or narrowing, especially of a tube or duct in the body.
Antonyms
- Dilation: The action of becoming wider, larger, or more open.
- Expansion: The action of becoming larger or more extensive.
Notes
- "Coarctation" is a highly specialized term used predominantly in medical and biological contexts. Its general meaning of "compression" is rare in everyday language.
Noun
- (biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta
- tight or narrow compression