What term describes blue coloring of the skin due to low oxygen?

What term describes blue coloring of the skin due to low oxygen?

• A. Jaundice
• B. Pallor
• C. Erythema
• D. Cyanotic

Answer: (D)

Cyanosis is the blue coloration seen when oxygen levels in the blood are low. The word cyanotic is used to describe someone who shows that blue tint. This happens because the amount of deoxygenated hemoglobin near the skin increases, making the skin look blue, especially in areas where the skin is thin or blood vessels are close to the surface like the lips and nail beds. Jaundice, pallor, and erythema describe yellow, pale, and red changes from different causes, so they don’t match the blue tint produced by low oxygen.

Cyanosis is the blue coloration seen when oxygen levels in the blood are low. The word cyanotic is used to describe someone who shows that blue tint. This happens because the amount of deoxygenated hemoglobin near the skin increases, making the skin look blue, especially in areas where the skin is thin or blood vessels are close to the surface like the lips and nail beds. Jaundice, pallor, and erythema describe yellow, pale, and red changes from different causes, so they don’t match the blue tint produced by low oxygen.