Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Cretinism to Davis, David

Cyanosis

oxygen blood

Cyanosis, bluish discoloration of skin and mucous membranes. Central cyanosis results from a lack of oxygen in the blood flowing in the arteries from the lungs. Peripheral cyanosis occurs when there is insufficient oxygen in the haemoglobin of the venous blood, as a result of extensive oxygen extraction at the level of the capillaries.

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