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In Medicine / College | 2025-07-06

Which of the following is consistent with a normal WBC count in a newborn? (units: x10sup3/mcL)
A. 15,000
B. 100
C. 5,000
D. 1,000
E. 1,700

Asked by chelleabel

Answer (1)

Convert all options to the unit x 1 0 3 / m c L .
Compare each option to the normal WBC range for newborns (9-30 x 1 0 3 / m c L ).
Identify the option that falls within the normal range.
The option consistent with a normal WBC count in a newborn is 15 , 000 ​ .

Explanation

Problem Analysis We are asked to identify a White Blood Cell (WBC) count that falls within the normal range for newborns. The unit for WBC count is x 1 0 3 / m c L . The options are: 15,000, 100, 5,000, 1,000, and 1,700.

Converting Units First, let's convert all options to the unit x 1 0 3 / m c L :



15,000 x 1 0 3 / m c L = 15 x 1 0 3 / m c L
100 x 1 0 3 / m c L = 0.1 x 1 0 3 / m c L
5,000 x 1 0 3 / m c L = 5 x 1 0 3 / m c L
1,000 x 1 0 3 / m c L = 1 x 1 0 3 / m c L
1,700 x 1 0 3 / m c L = 1.7 x 1 0 3 / m c L


Comparing to Normal Range A typical normal WBC range for newborns is between 9,000 and 30,000 x 1 0 3 / m c L , which is 9 to 30 in the given units. Now, let's compare each option to this range:


15,000 x 1 0 3 / m c L = 15 x 1 0 3 / m c L - This falls within the normal range (9-30).
100 x 1 0 3 / m c L = 0.1 x 1 0 3 / m c L - This is below the normal range.
5,000 x 1 0 3 / m c L = 5 x 1 0 3 / m c L - This is below the normal range.
1,000 x 1 0 3 / m c L = 1 x 1 0 3 / m c L - This is below the normal range.
1,700 x 1 0 3 / m c L = 1.7 x 1 0 3 / m c L - This is below the normal range.


Final Answer Therefore, the only option that falls within the normal WBC count range for newborns is 15,000 x 1 0 3 / m c L .

Final Answer The option consistent with a normal WBC count in a newborn is 15 , 000 ​ .


Examples
Understanding normal WBC counts is crucial in healthcare. For instance, if a newborn's WBC count is outside the normal range, it could indicate an infection or other health issues. Monitoring these counts helps doctors make informed decisions about the baby's care, ensuring they receive the necessary treatment promptly. This is similar to how quality control checks in manufacturing ensure products meet standards, preventing defective items from reaching consumers.

Answered by GinnyAnswer | 2025-07-06

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