Question

When evaluating the hemogram of an 8-month-old infant, the nurse understands that which type of hemoglobin is the predominant type?

A) Hemoglobin A
B) Hemoglobin F
C) Hemoglobin A2
D) Hemoglobin S

Answer 1

The predominant type of hemoglobin in an 8-month-old infant is Hemoglobin F (Hb F), which has 2 alpha (a) and 2 gamma (y) chains.

Step-by-step explanation:

The predominant type of hemoglobin in an 8-month-old infant is Hemoglobin F (Hb F).

Hemoglobin F is found in growing fetuses and has 2 alpha (a) and 2 gamma (y) chains. As the infant grows, the production of Hemoglobin F gradually decreases and is replaced by Hemoglobin A (Hb A) as the predominant type in adults. Hemoglobin A has 2 alpha (a) and 2 beta (ß) chains.

Therefore, in an 8-month-old infant, Hemoglobin F is the main type of hemoglobin present.