Cyanosis


Cyanosis
The bluish color of the skin and the mucous membranes (for example, of the lips) due to there being insufficient oxygen in the blood. The word "cyanosis" comes from the Greek "cyanos" meaning dark blue.
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A dark bluish or purplish discoloration of the skin and mucous membrane due to deficient oxygenation of the blood, evident when reduced hemoglobin in the blood exceeds 5 g/100 ml. [G. dark blue color, fr. kyanos, blue substance]
- compression c. c. accompanied by edema and petechial hemorrhages over the head, neck, and upper part of the chest, as a venous reflex resulting from severe compression of the thorax or abdomen; the conjunctiva and retinas are similarly affected.
- enterogenous c. apparent c. caused by the absorption of nitrites or other toxic materials from the intestine with the formation of methemoglobin or sulfhemoglobin; the skin color change is due to the chocolate color of methemoglobin.
- false c. c. due to the presence of an abnormal pigment, such as methemoglobin, in the blood, and not resulting from a deficiency of oxygen.
- hereditary methemoglobinemic c. SYN: congenital methemoglobinemia.
- late c. c. due to right to left shunt in congenital heart disease appearing only after cardiac failure. SYN: cyanose tardive, tardive c..
- c. retinae venous congestion of the retina.
- shunt c. any blue color of the entire skin or a region of the skin or mucous membrane due to a right to left shunt permitting unoxygenated blood to reach the left side of the circulation.
- tardive c. SYN: late c..
- toxic c. c. due to methemoglobin formation resulting from the action of certain drugs, e.g., nitrites.

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cy·a·no·sis .sī-ə-'nō-səs n, pl -no·ses -.sēz a bluish or purplish discoloration (as of skin) due to deficient oxygenation of the blood
cy·a·not·ic -'nät-ik adj

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n.
a bluish discoloration of the skin and mucous membranes resulting from an inadequate amount of oxygen in the blood. Cyanosis is associated with heart failure, lung diseases, the breathing of oxygen-deficient atmospheres, and asphyxia. Cyanosis is also seen in blue baby, because of congenital heart defects.
cyanotic adj.

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cy·a·no·sis (si″ə-noґsis) [Gr. kyanos blue] a bluish discoloration, especially of the skin and mucous membranes due to excessive concentration of deoxyhemoglobin in the blood. cyanosed, cyanotic adj

Medical dictionary. 2011.

Look at other dictionaries:

  • Cyanosis — A baby with a heart condition. Note purple nailbeds. ICD 10 R23.0 ICD 9 …   Wikipedia

  • Cyanosis — Cy a*no sis (s? ? n? s?s), n. [NL. See {Cyanic}.] (Med.) A condition in which, from insufficient a[eum]ration of the blood, the surface of the body becomes blue. See {Cyanopathy}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Cyanōsis — (gr.), Blausucht …   Pierer's Universal-Lexikon

  • Cyanōsis — (griech.), s. Blausucht …   Meyers Großes Konversations-Lexikon

  • Cyanosis — vgl. Zyanose …   Das Wörterbuch medizinischer Fachausdrücke

  • cyanosis — blue disease, the blue jaundice of the ancients, 1820, Medical Latin, from Gk. kyanosis, from kyanos dark blue color (see CYAN (Cf. cyan)) + OSIS (Cf. osis) …   Etymology dictionary

  • cyanosis — ► NOUN ▪ a bluish discoloration of the skin due to poor circulation or inadequate oxygenation of the blood. DERIVATIVES cyanotic adjective. ORIGIN Greek kuan sis blueness …   English terms dictionary

  • cyanosis — [sī΄ə nō′sis] n. pl. cyanoses [sī′ə nō′sēz΄] [ModL < Gr kyanōsis, dark blue color: see CYANO & OSIS] a bluish coloration of the skin or mucous membranes, caused by lack of oxygen or abnormal hemoglobin in the blood cyanotic [sī΄ənät′ik] adj …   English World dictionary

  • Cyanosis — Zyanose (f), Blausucht (f), Cyanosis (f) eng cyanosis …   Arbeitssicherheit und Gesundheitsschutz Glossar

  • cyanosis — n. a bluish discoloration of the skin and mucous membranes resulting from an inadequate amount of oxygen in the blood. Cyanosis is associated with heart failure, lung diseases, the breathing of oxygen deficient atmospheres, and asphyxia. Cyanosis …   The new mediacal dictionary


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