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Drug-resistant tuberculosis: pediatric guidelines
Navaneetha Pandian Poorana Ganga Devi1, Soumya Swaminathan
1National Institute for Research in Tuberculosis, Formerly The Tuberculosis Research Centre, No.1, Sathiyamoorthy Road, Chetpet, Chennai, 600 031, India, drpooranadevi@yahoo.co.in.
Insights
Multidrug-resistant tuberculosis (TB) significantly impacts children globally. Despite diagnostic and treatment challenges, especially with HIV coinfection, appropriate management leads to good outcomes for pediatric drug-resistant TB.
Area of Science:
- Pediatrics
- Infectious Diseases
- Public Health
Background:
- An estimated 650,000 global cases of multidrug-resistant tuberculosis (MDR-TB).
- Children under 15 constitute up to 20% of TB cases in high-burden areas, indicating a substantial pediatric burden of drug-resistant TB (DR-TB).
- Diagnosis is complicated by low bacterial burden, requiring multiple specimens and culture, though Xpert MTB/RIF offers improved sensitivity.
Purpose of the Study:
- To summarize the current understanding of diagnosing and treating drug-resistant tuberculosis in children.
- To highlight the specific challenges in pediatric DR-TB management, including HIV coinfection and drug formulation issues.
- To emphasize the importance of appropriate treatment for favorable outcomes in children with DR-TB.
Main Methods:
- Review of World Health Organization estimates on MDR-TB prevalence.
- Discussion of diagnostic approaches, including culture and Xpert MTB/RIF assay.
- Analysis of treatment principles, empiric regimens, and challenges in pediatric DR-TB management.
Main Results:
- Pediatric DR-TB is a substantial global health issue.
- Diagnosis requires advanced laboratory capabilities and can be challenging.
- Treatment regimens are often empiric, with potential drug interactions in HIV-coinfected children.
Conclusions:
- Children with DR-TB face unique diagnostic and treatment hurdles, including drug formulation and pharmacokinetic data limitations.
- HIV coinfection adds complexity due to potential antiretroviral and anti-TB drug interactions.
- Appropriate and timely treatment of pediatric DR-TB is associated with good patient outcomes.
Abstract:
The World Health Organization estimates that there are 650,000 prevalent cases of multidrug-resistant (MDR) tuberculosis (TB) globally, and since children (<15 years of age) constitute up to 20 % of the TB caseload in high-burden settings, the number of children with drug-resistant (DR) TB is likely to be substantial. Because bacterial burden at the site of disease is often low, diagnosis involves collection of multiple specimens and a laboratory capable of performing culture, although the Xpert MTB/RIF assay has improved sensitivity over smear examination. The basic principles of treatment for children are the same as those for adults with MDR-TB; however, the treatment regimen is often empiric and based on the drug susceptibility pattern of the source case, if available, or on past history of treatment. Additional challenges arise when MDR-TB is diagnosed and managed in the context of HIV coinfection. HIV-infected children are also treated with antiretroviral therapy medications, which have the potential to interact with second-line anti-TB drugs. Lack of pediatric formulations of second-line drugs and paucity of pharmacokinetic data make dosage challenging. However, when treated appropriately, children with DR TB have good outcomes.
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