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cyanosis
cy·a·no·sis C0833000 (sī′ə-nō′sĭs)n. A bluish discoloration of the skin and mucous membranes resulting from inadequate oxygenation of the blood.
cy′a·not′ic (-nŏt′ĭk) adj.cyanosis (ˌsaɪəˈnəʊsɪs) n (Pathology) pathol a bluish-purple discoloration of skin and mucous membranes usually resulting from a deficiency of oxygen in the blood cyanotic adjcy•a•no•sis (ˌsaɪ əˈnoʊ sɪs)
n. blueness or lividness of the skin, caused by a deficiency of oxygen or defective hemoglobin in the blood. [1825–35; < Greek kyán(os) (see cyano-1) + -osis] cy`a•not′ic (-ˈnɒt ɪk) adj. cyanosisbluish discoloration of the skin caused by lack of oxygen in the bloodstream. Also cyanopathy. — cyanotic, adj.See also: Disease and IllnessThesaurus| Noun | 1. | cyanosis - a bluish discoloration of the skin and mucous membranes; a sign that oxygen in the blood is dangerously diminished (as in carbon monoxide poisoning)symptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular diseaseacrocyanosis, Raynaud's sign - cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotioncarbon monoxide poisoning - a toxic condition that results from inhaling and absorbing carbon monoxide gas; "carbon monoxide combines with hemoglobin and displaces oxygen in the blood" |
Translationscyanosis
cyanosis (sī'ənō`sĭs), bluish coloration of the skin, mucous membranes, and nailbeds, resulting from a lack of oxygenated hemoglobin in the blood. It is a symptom of many disorders, including various pulmonary and heart diseases and many congenital heart defects (see blue babyblue baby,
infant born with a congenital heart defect that causes a bluish coloration of the skin as a result of cyanosis (deoxygenated blood). The color is most noticeable around the lips and at the tips of the fingers and toes.
..... Click the link for more information. ). Cyanosis that is caused by slowed circulation through peripheral blood vessels results in a bluish tinge only on the cool portions of the body (fingertips, nose, ears). In such cases the capillary blood gives up more than normal amounts of oxygen. Although this type of cyanosis can be caused by reduced cardiac output (e.g., in congestive heart failure), the most common causes are nervous tension and exposure to cold. Another type of cyanosis results from poisoning, either by nitrates in contaminated food or water or by certain chemicals and drugs.Cyanosis in medicine, a bluish violet discoloration of the skin and mucous membranes that occurs with human diseases accompanied by circulatory and respiratory disorders.
Cyanosis a bluish discoloration of the skin and mucous membranes. The condition ranges in coloration from gray-blue to black-blue (“cast iron”). Cyanosis is due to an increase in the concentration (more than 5 g percent) of reduced hemoglobin, which has a bluish coloration, in capillary blood. Intense cyanosis of the extremities is called acrocyanosis. A distinction is made between central cyanosis, which results from a disturbance of oxygen saturation of blood in the lungs, and peripheral cyanosis, which results from a slowing of the blood flow and from extensive oxygen extraction into the surrounding tissues. Central cyanosis is observed mainly in pulmonary diseases, congenital heart diseases, and poisonings by carbon dioxide and aniline derivatives. Peripheral cyanosis is seen in heart diseases caused by circulatory disturbances and conditions such as thrombophlebitis and Raynaud’s disease in which a local slowing of blood flow occurs. False cyanosis is caused by a change in the color of the skin itself. cyanosis[‚sī·ə′nō·səs] (medicine) A bluish coloration in the skin and mucous membranes due to deficient levels of oxygen in the blood. cyanosis Pathol a bluish-purple discoloration of skin and mucous membranes usually resulting from a deficiency of oxygen in the blood cyanosis
Cyanosis DefinitionCyanosis is a physical sign causing bluish discoloration of the skin and mucous membranes. Cyanosis is caused by a lack of oxygen in the blood. Cyanosis is associated with cold temperatures, heart failure, lung diseases, and smothering. It is seen in infants at birth as a result of heart defects, respiratory distress syndrome, or lung and breathing problems.DescriptionBlood contains a red pigment (hemoglobin) in its red blood cells. Hemoglobin picks up oxygen from the lungs, then circulates it through arteries and releases it to cells through tiny capillaries. After giving up its oxygen, blood circulates back to the lungs through capillaries and veins. Hemoglobin, as well as blood, is bright red when it contains oxygen, but appears dark or "bluish" after it gives up oxygen.The blue discoloration of cyanosis is seen most readily in the beds of the fingernails and toenails, and on the lips and tongue. It often appears transiently as a result of slowed blood flow through the skin due to the cold. As such, it is not a serious symptom. However, in other cases cyanosis is a serious symptom of underlying disease.Causes and symptomsThe blue color of the skin and mucous membranes is caused by a lack of oxygen in the blood. Low blood oxygen may be caused by poor blood circulation, or heart or breathing problems. It can also be caused by being in a low-oxygen environment or by carbon monoxide poisoning. More rarely, cyanosis can be present at birth as a sign of congenital heart disease, in which some of the blood is not pumped to the lungs where oxygen would make the blood a bright red color. Instead, the blood goes to the rest of the body and remains unoxygenated. Cyanosis also may be caused by poisoning from chemicals, drugs, or contaminated food and water.Other signs of low blood oxygen may accompany cyanosis, including feeling lightheaded or fainting.TreatmentTreatment of the underlying disease can restore proper color to the skin.Key termsHemoglobin — A colored substance (pigment) in the blood that carries oxygen to tissues and gives blood its red color.Respiratory distress syndrome — Also known as hyaline membrane disease, this is a condition of premature infants in which the lungs are imperfectly expanded due to a lack of a substance on the lungs that reduces tension.PrognosisIf the underlying condition (such as heart or lung disease) can be properly treated, the skin will return to its normal shade.ResourcesBooksCarolson, Karen J., Stephanie A. Eisenstat, and Terra Ziporyn. The Harvard Guide to Women's Health. Cambridge, MA: Harvard University Press, 1996.cyanosis [si″ah-no´sis] a bluish discoloration of the skin and mucous membranes due to excessive concentration of reduced hemoglobin in the blood. adj., adj cyanot´ic.central cyanosis that due to arterial unsaturation, the aortic blood carrying reduced hemoglobin.enterogenous cyanosis a syndrome due to absorption of nitrites and sulfides from the intestine, principally marked by methemoglobinemia and/or sulfhemoglobinemia associated with cyanosis, and accompanied by severe enteritis, abdominal pain, constipation or diarrhea, headache, dyspnea, dizziness, syncope, anemia, and, occasionally, digital clubbing and indicanuria.peripheral cyanosis that due to an excessive amount of reduced hemoglobin in the venous blood as a result of extensive oxygen extraction at the capillary level.cy·a·no·sis (sī'ă-nō'sis), 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] cyanosis (sī′ə-nō′sĭs)n. A bluish discoloration of the skin and mucous membranes resulting from inadequate oxygenation of the blood.
cy′a·not′ic (-nŏt′ĭk) adj.An abbreviation—Cyanosis, Clubbing, Edema—used in physical examination of the extremities, which is a crude indicator of adequate oxygenation of bloodcyanosis Physical examination A bluish discoloration of skin and mucosae due to excessive concentration of reduced Hb in the blood. See Hypoxia. cy·a·no·sis (sī'ă-nō'sis) A dark blue or purple discoloration of the skin, nail beds, lips, or mucous membranes seen with sulfmethemoglobin concentrations of 0.5 g per 100 mL or greater, methemoglobin concentrations of 1.5 g per 100 mL or greater, or deoxyhemoglobin concentrations of 5.0 g per 100 mL or greater. cyanosis Blueness of the skin from insufficient oxygen in the blood. Fully oxygenated blood is bright red and imparts a healthy pinkness to the skin. Blood low in oxygen is dark reddish-blue and, through the skin, looks a dusky blue. Cyanosis may be due to lung disease, HEART FAILURE or disorders, especially congenital heart disease, in which, blood is shunted away from the lungs. ‘Blue babies’ have cyanosis.cyanosis bluish discolouration of the skin and lining of the mouth due to lack of OXYGEN in the BLOOD.cy·a·no·sis (sī'ă-nō'sis) A dark bluish or purplish discoloration of the skin and mucous membrane due to deficient oxygenation of the blood. cyanosis
Related to cyanosis: Peripheral cyanosis, Central cyanosisWords related to cyanosisnoun a bluish discoloration of the skin and mucous membranesRelated Words- symptom
- acrocyanosis
- Raynaud's sign
- carbon monoxide poisoning
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