Which statement about acrocyanosis is correct?

Which statement about acrocyanosis is correct?

• A. Acrocyanosis is cyanosis of the hands and feet, and is a normal finding in infants younger than 2 months of age who are cold.
• B. Acrocyanosis is a sign of severe hypoxemia in all infants.
• C. Acrocyanosis only occurs in preterm infants.
• D. Acrocyanosis is a fixed color change seen in congenital heart disease.

Answer: (A)

Acrocyanosis is peripheral cyanosis of the hands and feet caused by vasomotor instability in newborns. It’s a normal finding when infants are cold or stressed, especially in the first days/weeks of life, because blood flow to the extremities is reduced with cooling and immature circulation. The key here is that the color change is limited to the extremities and often improves with warming; the mucous membranes and lips remain normal colored, which helps distinguish it from true central cyanosis due to hypoxemia. This makes the statement correct because it captures both parts: the cyanosis is peripheral (hands and feet) and it can be a normal finding in young infants when they’re cold. It’s not a sign of severe hypoxemia in all infants, it isn’t limited to preterm infants, and it’s not a fixed color change seen in congenital heart disease. If central cyanosis or other signs of illness are present, further evaluation is needed.

Acrocyanosis is peripheral cyanosis of the hands and feet caused by vasomotor instability in newborns. It’s a normal finding when infants are cold or stressed, especially in the first days/weeks of life, because blood flow to the extremities is reduced with cooling and immature circulation. The key here is that the color change is limited to the extremities and often improves with warming; the mucous membranes and lips remain normal colored, which helps distinguish it from true central cyanosis due to hypoxemia.

This makes the statement correct because it captures both parts: the cyanosis is peripheral (hands and feet) and it can be a normal finding in young infants when they’re cold. It’s not a sign of severe hypoxemia in all infants, it isn’t limited to preterm infants, and it’s not a fixed color change seen in congenital heart disease. If central cyanosis or other signs of illness are present, further evaluation is needed.