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Difficulty: MediumPediatric Infectious Diseases

A mother brings her 10-month-old daughter to a pediatric clinic for evaluation of a fever and a new rash. The infant developed a high fever, a persistent cough, and a runny nose four days ago. Since yesterday, her eyes have been markedly red and watering. This morning, the mother noticed a rash starting on the child's face. The infant has not received any vaccinations due to the family's personal beliefs. Her temperature is 39.4∘C39.4^\circ\text{C} (102.9∘F102.9^\circ\text{F}), pulse is 155/min155/\text{min}, and respirations are 38/min38/\text{min}. Physical examination reveals an ill-appearing infant. There is a blanching, erythematous maculopapular rash prominent on the face and neck, with early spread to the upper trunk. Oral examination shows clustered, 11- to 2 mm2\text{ mm} white lesions on an erythematous base on the bilateral buccal mucosa. Lung auscultation reveals transmitted upper airway sounds. Which of the following is the most appropriate next step in management?

  1. Initiate airborne precautions and administer oral vitamin AAnswer
  2. B
    Administer the live-attenuated measles-mumps-rubella vaccine
  3. C
    Prescribe oral amoxicillin-clavulanate and initiate droplet precautions
  4. D
    Administer nebulized albuterol and prescribe oral dexamethasone
  5. E
    Advise that the illness is self-limiting and discharge with reassurance

Answer

Initiate airborne precautions and administer oral vitamin A
The correct answer addresses both the public health and clinical treatment requirements for acute measles. Measles is highly contagious and spread via airborne droplets, necessitating strict airborne precautions. The World Health Organization and the American Academy of Pediatrics recommend administering vitamin A to all children with acute measles, as the infection rapidly depletes vitamin A stores. Supplementation has been proven to significantly reduce morbidity (particularly from pneumonia, croup, and keratoconjunctivitis) and mortality.

Step-by-Step Solution

1
Analyze the patient's demographic risk factors and clinical presentation.
The unimmunized infant presents with fever, the "3 Cs" (cough, coryza, conjunctivitis), pathognomonic Koplik spots (white buccal mucosal lesions), and a cephalocaudal maculopapular rash.
To establish the primary clinical diagnosis of acute measles (rubeola) infection.
2
Determine the necessary infection control measures based on the pathogen's transmission route.
The measles virus is highly contagious and remains suspended in the air as aerosolized droplets for up to two hours.
Airborne precautions (e.g., negative pressure room isolation) are strictly required to prevent nosocomial transmission to other patients and healthcare staff.
3
Identify the specific therapeutic intervention recommended for this viral illness.
High-dose oral vitamin A supplementation is indicated.
Measles depletes vitamin A stores. Supplementation is strongly recommended by pediatric guidelines because it significantly reduces the risk of severe complications, such as pneumonia and blindness, and overall mortality.

Key Concept

Measles (rubeola) presents with a prodrome of fever, cough, coryza, and conjunctivitis, followed by pathognomonic Koplik spots and a cephalocaudal rash. Immediate management requires airborne precautions to halt transmission and vitamin A administration to reduce severe morbidity and mortality.
Estimated Time:1m 0s
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Topics

Pediatric Infectious Diseases

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