A nurse is reviewing the laboratory results of an adolescent female client and notes a WBC count of 16,000/mm² with increased immature neutrophils (bands) and normal monocytes. Which of the following is the appropriate analysis of the results?
A.
An acute infectious process.
B.
A resolving inflammatory process.
C.
Allergic reaction.
D.
Neutropenia.
The correct answer and Explanation is :
The correct answer is A. An acute infectious process.
A white blood cell (WBC) count of 16,000/mm³ is elevated, as the normal range for WBCs is typically between 4,500 and 11,000/mm³. This condition is known as leukocytosis, which frequently indicates an ongoing infection or inflammation in the body.
The presence of increased immature neutrophils, also known as bands, points to a “left shift,” which is a key indicator of the body’s response to acute infection, often bacterial in nature. When the body is fighting an infection, especially bacterial infections, the bone marrow is stimulated to produce and release neutrophils, the primary type of WBC responsible for responding to infection. If the demand for neutrophils is high, the bone marrow may release immature forms (bands) into circulation, which indicates an active infection that the body is trying to combat.
Let’s review the other options:
- B. A resolving inflammatory process: During the resolution of an inflammatory process, WBC counts typically decrease as the immune response subsides, and immature neutrophils are less likely to be present. This option does not fit the elevated WBC count and the presence of bands.
- C. Allergic reaction: Allergic reactions are usually associated with an increase in eosinophils rather than neutrophils or bands. An elevated WBC count in this case wouldn’t typically show an increase in immature neutrophils.
- D. Neutropenia: Neutropenia refers to a lower-than-normal count of neutrophils, which is the opposite of what is indicated here. In this case, the neutrophil count, including immature forms, is increased, not decreased.
Thus, the laboratory results strongly suggest an acute infectious process, most likely bacterial in origin.