Author Question: A normal 3-month-old boy has a hemoglobin of 11.2 g/dL. Which of the following is true about his ... (Read 38 times)

tnt_battle · **on:** Jun 25, 2018

A normal 3-month-old boy has a hemoglobin of 11.2 g/dL. Which of the following is true about his hemoglobin? It is:

a. Higher than that of a normal full-term newborn
b. Lower than that of an adult of the same age
c. Higher than that of a 14 year old of the same sex
d. The same as that of an adult of the same sex

Question 2

Why is the white count in a normal full-term newborn elevated shortly after birth?

a. A relative loss of plasma occurs.
b. An absolute increase in neutrophils occurs.
c. An absolute increase in lymphocytes occurs.
d. An absolute increase in both neutrophils and lymphocytes occurs.

canderson530 · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: B
Hemoglobin is lower in a 3 month old than that of an adult of the same sex. It is normally higher at birth but quickly begins to decrease so that by 3 months old this would be a normal hemoglobin (abnormal at birth). It is lower than that of both a 14 year old and an adult of the same sex.

Answer to Question 2

ANS: B
An absolute increase in neutrophils occurs within hours of birth; this elevates the white count. Bands and occasionally myelocytes may also be present. At day 2, the count begins to drop progressively, primarily because of an absolute decrease in neutrophils.