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Updated: Jun 18, 2026

Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment
Published on: June 23, 2019
Induced sputum in HIV- infected patients: diagnosis of acute pulmonary diseases
Glória Maria de Oliveira1, Alexander Magno Cordeiro, Giovanni Antonio Marsico
1Programa de Pós-Graduação em Ciências Cirúrgicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ.
Objective:
To make a narrative review of the accuracy of induced sputum for diagnosis of pulmonary disease in HIV-infected patients.
Data Sources:
The MEDLINE, LILACS, EMBASE and the Cochrane Library were searched. reference lists, abstracts of conference proceedings and scientific meetings were hand searched.
Study Selection:
Fifteen articles that specifically addressed the stated purpose were selected.
Data Extraction:
Yield of sputum induction and fiberoptic bronchoscopy with bronchoalveolar lavage were analyzed using explicit methodologic to evaluate the quality of clinical trials.
Results:
Sputum induction demonstrated 55.5% sensitivity and 98.6% specificity to Pneumocystis pneumonia. Sensitivity of sputum induction was significantly higher with immunofluorescence than with cytochemical staining (67.1 versus 43.1%). Sputum induction for diagnosis of bacterial pneumonia demonstrated 60% sensitivity, 40% specificity, 80% positive predictive value, 20% negative predictive value and 56% accuracy. In relation to tuberculosis, sputum induction demonstrated 36% sensitivity, 100% specificity, 100% positive predictive value and 54.2% negative predictive value.
Conclusion:
Sputum induction seems to be effective and safe for diagnosis of pulmonary diseases in HIV-infected patients.
Insights
Induced sputum is an effective and safe method for diagnosing pulmonary diseases in patients with HIV. This diagnostic tool shows varying accuracy for different infections, including Pneumocystis pneumonia, bacterial pneumonia, and tuberculosis.
Area of Science:
- Pulmonary Medicine
- Infectious Diseases
- Diagnostic Accuracy
Background:
- Pulmonary diseases pose a significant diagnostic challenge in HIV-infected patients.
- Accurate and timely diagnosis is crucial for effective management and improved patient outcomes.
Purpose of the Study:
- To conduct a narrative review on the diagnostic accuracy of induced sputum in HIV-infected individuals.
- To evaluate the effectiveness of induced sputum for identifying various pulmonary infections.
Main Methods:
- Comprehensive literature search of MEDLINE, LILACS, EMBASE, and Cochrane Library.
- Inclusion of 15 relevant articles specifically addressing the study's objective.
- Analysis of sputum induction and bronchoscopy yields using rigorous methodological standards for clinical trial evaluation.
Main Results:
- Induced sputum shows high specificity (98.6%) for Pneumocystis pneumonia.
- Diagnostic accuracy for bacterial pneumonia and tuberculosis varies, with higher sensitivity reported for Pneumocystis pneumonia using immunofluorescence.
- Sputum induction demonstrates moderate sensitivity and high specificity for tuberculosis.
Conclusions:
- Induced sputum is a valuable, safe, and effective tool for diagnosing pulmonary diseases in HIV-infected patients.
- The method's utility is demonstrated across different infectious etiologies, supporting its clinical application.
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