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Bronchoalveolar Lavage (BAL) for Research; Obtaining Adequate Sample Yield
Published on: March 25, 2014
Use of bronchoalveolar lavage in immunocompromised children with pneumonia
E N Pattishall1, B E Noyes, D M Orenstein
1Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh, Pennsylvania 15213.
Insights
Bronchoalveolar lavage (BAL) is a safe and rapid diagnostic tool for pediatric pneumonia in immunocompromised children. This flexible fiber-optic bronchoscopy procedure successfully identified pathogens in most cases, aiding clinical decisions.
Area of Science:
- Pediatrics
- Infectious Diseases
- Pulmonology
Background:
- Pneumonia diagnosis in immunocompromised children poses significant challenges.
- Immunocompromised status increases susceptibility to severe respiratory infections.
Purpose of the Study:
- To evaluate the diagnostic utility of bronchoalveolar lavage (BAL) using flexible fiber-optic bronchoscopy in immunocompromised children with pneumonia.
- To assess the safety and efficiency of BAL in this patient population.
Main Methods:
- Prospective study of 14 immunocompromised children with pneumonia over 5 months.
- Flexible fiber-optic bronchoscopy with BAL for sample collection.
- Analysis of BAL fluid for identification of causative pathogens.
Main Results:
- A diagnosis was achieved in 10 out of 14 (71%) children.
- Identified pathogens included Pneumocystis carinii, cytomegalovirus (CMV), Aspergillus fumigatus, and mixed infections.
- No complications were reported during the procedure.
Conclusions:
- BAL via flexible fiber-optic bronchoscopy is a rapid, safe, and effective diagnostic method for pneumonia in immunocompromised children.
- BAL should be considered before invasive procedures like lung biopsy.
- Early and accurate diagnosis facilitates timely management of respiratory infections in this vulnerable group.
Abstract:
Because pneumonia in the immunocompromised host presents a diagnostic dilemma to the pediatrician, we prospectively studied the use of bronchoalveolar lavage (BAL) with flexible fiberoptic bronchoscopy in 14 immunocompromised children with pneumonia over a 5-month period. The children received immunosuppressive agents because of organ transplants, cancer, or systemic lupus erythematosus. A diagnosis was made by BAL in 10 (71%) of the 14 children. Pathogenic organisms included Pneumocystis carinii in six, cytomegalovirus (CMV) in two, Aspergillus fumigatus in one, and a mixed infection of Candida albicans and CMV in one. There were no complications. Because BAL by flexible fiber-optic bronchoscopy is a rapid and safe procedure and a diagnosis can be made in a majority of cases, we recommend its use in immunocompromised children with pneumonia before resorting to lung biopsy.
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