cyanosis


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Related to cyanosis: Peripheral cyanosis, Central cyanosis

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.
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). 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
References in periodicals archive ?
After approximately 30 minutes, the cyanosis resolved and the digital artery Doppler signals returned to normal.
Following repair of the SOVA and closure of the PFO, the patient had marked improvement in her symptoms and complete resolution of her cyanosis.
cyanosis is associated with fetal growth retardation.
University Hospital Sharjah (UHS) has admitted a rare critical case of a one-day old newborn with pulmonary hypertension and apnea, resulting in severe hypoxia and a drop in oxygen saturation of 100 per cent, with generalised cyanosis.
Methemoglobinemia generally presents with signs of cyanosis and dark-brown colored arterial blood.
A 45-year-old female patient who had a 10-year history of SLE presented to our outpatient rheumatology clinic with complaints of severe pain and cyanosis along with appearance of digital ulcers on her fingers (Figure 1).
TRANSIENT EPISODES OF REFLUX OF INFASURF INTO THE ENDOTRACHEAL TUBE, CYANOSIS, BRADYCARDIA, OR AIRWAY OBSTRUCTION HAVE OCCURRED DURING THE DOSING PROCEDURES that required stopping Infasurf and taking appropriate measures to alleviate the condition.
Two hours after admission they have the Mahogany spots over the cheek bones, and a few hours later you can begin to see the Cyanosis extending from their ears and spreading all over the face, until it is hard to distinguish the colored men from the white.
Coldness, pallor, and cyanosis developed in the distal region of the right forearm soon after venipuncture of the right antecubital vein.
The following serious adverse reactions have been reported from the post-marketing spontaneous reports with Feraheme: life-threatening anaphylactic-type reactions, cardiac/cardiorespiratory arrest, clinically significant hypotension, syncope, unresponsiveness, loss of consciousness, tachycardia/rhythm abnormalities, angioedema, ischemic myocardial events, congestive heart failure, pulse absent, and cyanosis.
For example, the study reports, yellow or blue surfaces could make a visual diagnosis of jaundice, cyanosis or other diseases difficult.
Clinical symptoms, such as apnea, syncope, cyanosis, and deterioration of general condition, were also less frequent in the vaccinated group (Table 2).