What would be a sign of peripheral cyanosis?

Question

Quizplus · Accepted Answer

Cyanosis refers to a bluish discoloration of the skin, mucous membranes or nail beds, and usually indicates a decrease in the amount of oxygenated hemoglobin. Peripheral cyanosis occurs when there is a localized decrease in blood flow or oxygen delivery to the peripheral tissues. Changes in skin color of the lips would be a sign of peripheral cyanosis, as the lips are a highly vascularized area and can quickly exhibit changes in color with changes in blood flow or oxygen saturation levels. Changes in skin color behind the knees, changes in the mucous membranes, and changes in mental status are not specific signs of peripheral cyanosis.

What Would Be a Sign of Peripheral Cyanosis