In an immunocompromised patient, the nurse should take infection prevention methods when WBC is:

Appeared in: AIIMS Delhi NO- 2019

Explanation

A White Blood Cell (WBC) count of 2,000/mm³ is significantly below the normal range of 4,000-11,000/mm³, a condition known as leukopenia.
This critically low level of immune cells severely impairs the body's ability to fight off pathogens, placing the patient at a high risk for developing serious infections.
This lab value is a clear trigger for the nurse to implement neutropenic precautions (protective isolation) to protect the patient from acquiring an infection from the environment, staff, or visitors.

Option A: A WBC count of 11,000/mm³ is at the upper limit of the normal range. It does not indicate immunosuppression and therefore does not require special infection prevention methods.
Option B: A WBC count of 5,800/mm³ is a healthy value that falls comfortably within the normal range of 4,000-11,000/mm³.
Option C: A WBC count of 7,000/mm³ is a healthy, normal value, indicating a properly functioning immune system.

Clinical Relevance

Nursing practice connection: Knowing Interpretation of White Blood Cell (WBC) count and initiation of neutropenic precautions helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses must be able to interpret WBC counts to promptly identify patients at risk for infection and initiate protective measures.
Initiating neutropenic precautions is a critical, independent nursing responsibility to prevent life-threatening sepsis in immunocompromised patients.
What if? If a patient with a WBC of 2,000 also develops a fever of 38.1°C (100.5°F), it is considered a neutropenic fever, which is a medical emergency. The nurse's first actions would be to notify the provider immediately and prepare to obtain blood cultures before administering broad-spectrum antibiotics.

How to Approach the Question

First, identify the core of the question: at what lab value should a nurse take specific action for an immunocompromised patient?
Recall the normal range for a White Blood Cell (WBC) count, which is approximately 4,000 to 11,000 cells/mm³.
Analyze each option by comparing it to this normal range.
Eliminate the options that fall within the normal range (5,800, 7,000, and 11,000) as they represent a healthy or borderline-high immune status, not a compromised one.
Select the value that is significantly below the normal range (2,000), as this indicates leukopenia and a high risk of infection, which is the trigger for implementing infection prevention methods.

Concept Tested & Keywords

Concept Tested: Interpretation of White Blood Cell (WBC) count and initiation of neutropenic precautions.
Stem keywords: immunocompromised patient, infection prevention, WBC
Lead-in keywords: when

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