Qualified Medication Aides (QMA) Practice Exam

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What is a typical characteristic of cyanosis?

Yellowing of the skin
Blue discoloration of skin
Redness of the skin
Dry skin texture

The correct answer is: Blue discoloration of skin

Cyanosis is characterized by a blue discoloration of the skin and mucous membranes, which occurs due to limited oxygen in the blood. This condition often manifests in areas such as the lips, fingertips, and toenails, signaling potential respiratory or circulatory issues. The bluish tint is a result of deoxygenated hemoglobin in the blood, which has a darker color compared to oxygenated hemoglobin. Other options such as yellowing of the skin, redness of the skin, and dry skin texture do not align with the hallmark features of cyanosis. Yellowing of the skin, known as jaundice, typically indicates liver dysfunction or issues with bilirubin processing. Redness signifies a different condition called erythema, which can result from increased blood flow due to various factors including inflammation or fever. Lastly, dry skin texture does not reflect a specific oxygenation issue but rather relates to skin hydration or potential dermatological conditions. Therefore, blue discoloration is the defining characteristic of cyanosis.