A 5-year-old is a family contact to the client with tuberculosis. Isoniazid (INH) has been prescribed for the client. The nurse is aware that the length of time that the medication will be taken is?

1. A

   1 year

2. B

   3 months

3. C

   6 months

4. D

   2 years

Appeared in: DHS 2018 shift 1st

Explanation

• A 6-month course of daily Isoniazid (INH) is the standard recommended duration for Tuberculosis Preventive Treatment (TPT) in children who are household contacts of a TB patient.
• This duration is recommended by international bodies like the World Health Organization (WHO) as it effectively balances efficacy in preventing active disease with patient compliance and a lower risk of adverse effects.
• For children, who are at higher risk of progressing from latent infection to severe forms of TB, this 6-month regimen provides a high degree of protection, reducing the risk by up to 90%.

Why Other Options Were Wrong

• Option A: A 1-year (or 9-12 month) course is longer than the current standard recommendation for routine pediatric prophylaxis.
• Option B: A 3-month course is too short for Isoniazid monotherapy to be effective.
• Option D: A 2-year duration is excessively long for prophylaxis, offers no additional benefit, and significantly increases the cumulative risk of drug-related toxicity.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Duration of Isoniazid (INH) prophylaxis for latent tuberculosis in children to guide bedside assessment, documentation, and the next nursing action.
• Nurses play a crucial role in educating the family about the importance of completing the full 6-month course of medication to prevent the child from developing active TB.
• Monitoring for adverse effects of INH, such as hepatotoxicity (jaundice, dark urine, abdominal pain) and peripheral neuropathy, is a key nursing responsibility.
• What if? If the child were immunocompromised (e.g., living with HIV), the recommended duration of INH prophylaxis might be extended to 9 or 12 months to ensure maximum protection, and this would require even closer monitoring.

How to Approach the Question

• First, identify the core of the question: It asks for the standard duration of a specific medication (Isoniazid) for a specific purpose (TB prophylaxis) in a specific patient (5-year-old child contact).
• Next, recall the current guidelines for Tuberculosis Preventive Treatment (TPT) in children. The patient's age (under 5) is a critical factor indicating a high risk for disease progression.
• Then, evaluate the given options against the standard INH monotherapy regimen. Recognize that different durations often correspond to different drug combinations.
• The standard duration for INH monotherapy is 6 months. Longer durations are reserved for special cases, and shorter durations typically involve combination therapy.
• Finally, select the option that matches the standard guideline for this specific clinical scenario.

Concept Tested & Keywords

• Concept Tested: Duration of Isoniazid (INH) prophylaxis for latent tuberculosis in children.
• Stem keywords: 5-year-old, family contact, tuberculosis, Isoniazid (INH)
• Lead-in keywords: length of time
• Clinical cues: Patient is a 5-year-old child, a high-risk group for progression to active TB if infected.
• Negative lead-in flag: false

Question ID

QWeBzjg3N2o4nsGuH4JwJG

Copy ID

Reference Book

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1857-1859

E6 Medicine Harrison 22e Part 1 p. 1443-1445