Lymphocytes in viral infection?

Appeared in: PGIMER NO - 2020

Explanation

The typical immune response to a viral infection involves an increase in the production and circulation of lymphocytes.
This condition is medically termed lymphocytosis.
Lymphocytes, which include T-cells and B-cells, are the primary white blood cells responsible for fighting viral pathogens.
Common viral illnesses like infectious mononucleosis, mumps, and measles are classic examples that cause lymphocytosis.

Option A: A decrease in lymphocytes (lymphopenia) is not the standard response to most viral infections.
Option C: The immune system actively responds to any infection, causing significant changes in blood cell counts.
Option D: This option is incorrect because there is a distinct and predictable change in the lymphocyte count during a viral infection.

Clinical Relevance

Nursing practice connection: Knowing Hematological response to viral infections helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
A complete blood count (CBC) with a differential white cell count is a fundamental diagnostic tool. A finding of lymphocytosis strongly suggests a viral cause for an infection, helping to guide treatment (e.g., avoiding unnecessary antibiotics).
Nurses are often responsible for reviewing lab results and must be able to recognize these patterns to anticipate patient needs and potential physician orders.
What if? If the patient's lab results showed a high neutrophil count (neutrophilia) instead of lymphocytosis, the nurse should suspect a bacterial infection. This would warrant different interventions, likely including the administration of antibiotics and monitoring for signs of sepsis.

How to Approach the Question

First, identify the key terms in the question: 'Lymphocytes' and 'viral infection'.
Recall the primary roles of different white blood cells. Neutrophils are the main fighters against bacteria, while lymphocytes are the specialists for viral infections.
Reason that when the body is attacked by a virus, it needs to produce more of its specialized virus-fighting cells.
Conclude that the number of lymphocytes will increase to combat the viral infection.
Select the option that reflects an increase in the lymphocyte count.

Concept Tested & Keywords

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E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 111-113

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 2012-2014

Practise the full PGIMER NO - 2020

Attempt every question from this paper in a timed mock, then review the full solution for each one.