Which of the following is consistent with a normal WBC count in a newborn? (units: x10^3/mcL)
A. 15,000
B. 100
C. 5,000
D. 1,000
E. 1,700
Answer (2)
The normal WBC range for newborns is 9,000-30,000 x10^3/mcL.
Multiply each option by 1000 to match the units of the normal range.
Check if any of the scaled options fall within the normal range.
None of the options (15,000, 100, 5,000, 1,000, 1,700) multiplied by 1000 fall within the normal range of 9,000-30,000. Therefore, the answer is that none of the options are consistent with a normal WBC count. Since the question asks 'Which of the following is consistent', and none are, we can say that the answer is none of the provided options.
Since none of the options are in the normal range, there is no correct answer among the choices given. However, if we were forced to pick one, it would be the one closest to the range. But as it stands, the question is flawed.
Since none of the options are correct, we cannot provide a boxed answer from the given choices.
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 x10^3/mcL. The options provided are: 15,000, 100, 5,000, 1,000, and 1,700.
Normal WBC Range The normal WBC range for newborns is typically between 9,000 and 30,000 x10^3/mcL. We need to check which of the given options, when multiplied by 1000, falls within this range.
Checking Each Option Let's analyze each option:
15,000: 15,000 * 1000 = 15,000,000. This is not within the normal range of 9,000 to 30,000.
100: 100 * 1000 = 100,000. This is not within the normal range.
5,000: 5,000 * 1000 = 5,000,000. This is not within the normal range.
1,000: 1,000 * 1000 = 1,000,000. This is not within the normal range.
1,700: 1,700 * 1000 = 1,700,000. This is not within the normal range.
Conclusion None of the provided options, when scaled by 1000, fall within the normal WBC range of 9,000 to 30,000 x10^3/mcL for newborns. Therefore, none of the options are consistent with a normal WBC count in a newborn.
Examples
Understanding normal WBC counts is crucial in healthcare. For instance, if a newborn's WBC count is significantly outside the normal range, it could indicate an infection, immune disorder, or other health issues. Doctors use these counts to diagnose and monitor the baby's health, ensuring timely interventions if needed. Monitoring WBC counts helps in early detection and management of potential health problems in newborns, contributing to better health outcomes.
None of the provided options for white blood cell counts are consistent with the normal range for newborns, which is 9,000 to 30,000 cells per mcL. Each option greatly exceeds this normal range. Therefore, none of the choices are the correct answer.
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