CYANOSIS

Cyanosis

Cyanosis is the appearance of a blue or purple coloration of the skin or mucous membranes due to the tissues near the skin surface having low oxygen saturation. Based on Lundsgaard and Van Slyke's work, the onset of cyanosis is classically described as occurring if 5.0 g/dL of deoxyhemoglobin or greater is present. What is commonly forgotten, however, is that this was based on an "estimate" of capillary saturation based on a mean of arterial versus peripheral venous blood gas measurements. Since estimation of hypoxia is usually now based either on arterial blood gas measurement, or pulse oximetry, this is probably an overestimate, with evidence that ...

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cyanosis

Noun

  1. A blue discolouration of the skin due to the circulation of blood low in oxygen.


The above text is a snippet from Wiktionary: cyanosis
and as such is available under the Creative Commons Attribution/Share-Alike License.

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