A nurse observes Koplik's spots on oral examination of a child with fever. This is indicative of?

Appeared in: SCTIMST Staff Nurse - 2015 (Set-A)

Explanation

Koplik's spots are a hallmark sign of measles (rubeola), a highly contagious viral illness.
These spots are described as small, bluish-white lesions on an erythematous (red) base, appearing on the buccal mucosa opposite the molars.
They are considered pathognomonic, meaning their presence is specifically diagnostic for measles.
The spots typically appear 1-2 days before the onset of the characteristic measles rash, during the prodromal period which also includes fever, cough, coryza, and conjunctivitis.

Option B: Diphtheria is characterized by the formation of a thick, gray, adherent pseudomembrane over the tonsils and pharynx, not Koplik's spots.
Option C: Dengue fever, known as 'break-bone fever,' presents with high fever, severe myalgia, headache, and a petechial rash. It does not cause Koplik's spots.
Option D: Whooping cough (pertussis) is a bacterial infection of the respiratory tract. Its defining feature is a severe, paroxysmal cough followed by a characteristic high-pitched 'whoop' sound on inspiration. It is not associated with any oral spots.

Clinical Relevance

Nursing practice connection: Use the key finding related to Identification of pathognomonic signs of infectious diseases to guide bedside assessment, documentation, and the next nursing action.
Early identification of Koplik's spots is critical for prompt diagnosis and initiation of airborne precautions, as measles is highly contagious and can spread rapidly in healthcare settings and communities.
A nurse's report of Koplik's spots should trigger immediate patient isolation and notification of public health authorities to manage potential outbreaks.
Management of measles is supportive and includes vitamin A supplementation, especially in children, as it has been shown to reduce morbidity and mortality.

How to Approach the Question

First, identify the key clinical finding presented in the question: 'Koplik's spots'.
Recognize this term as a specific, pathognomonic sign taught in nursing education.
Access your knowledge base to recall which infectious disease is uniquely associated with this sign.
Evaluate the given options: Measles, Diphtheria, Dengue fever, and Whooping cough.
Match the sign (Koplik's spots) to the correct disease (Measles).
Mentally confirm the incorrectness of the other options by recalling their hallmark signs (e.g., pseudomembrane for Diphtheria, paroxysmal cough for Whooping cough).

Concept Tested & Keywords

Concept Tested: Identification of pathognomonic signs of infectious diseases.
Stem keywords: Koplik's spots, oral examination, child, fever
Lead-in keywords: indicative of
Clinical cues: The presence of Koplik's spots is a specific clinical finding that points directly to a single diagnosis.

QxCKt_8MRn8Fj9JWKaeRyd

E6 Medicine Harrison 22e Part 1 p. 1682-1684

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) p. 150-152

Practise the full SCTIMST Staff Nurse - 2015 (Set-A)

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