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Published on: November 10, 2023
The etiology of extensive pleural effusions with troublesome clinical course among children
Luís Marcelo Inaco Cirino1, Filumena Maria da Silva Gomes, Bernardo Nogueira Batista
1University Hospital, Universidade de São Paulo, São Paulo, Brazil. marcelocirino@uol.com.br
Insights
Complicated parapneumonic pleural effusion in children, often caused by Streptococcus pneumoniae, requires surgical intervention. Despite similar bacteriology to non-complicated cases, outcomes are worse, necessitating further research.
Area of Science:
- Pediatric Infectious Diseases
- Pulmonology
- Surgical Pathology
Background:
- Pneumonia is a leading infectious cause of mortality in children in São Paulo.
- Parapneumonic pleural effusion is a common complication requiring surgical treatment if antibiotic therapy fails.
Purpose of the Study:
- To investigate the etiological factors of complicated parapneumonic pleural effusions in children necessitating surgical intervention.
Main Methods:
- A retrospective analysis of 117 cases of pediatric pleural empyema requiring surgery between 1986 and 1996.
- Evaluation of clinical condition, radiological findings, nutritional and immunization status, prior antimicrobial therapy, and pleural effusion bacterioscopy.
Main Results:
- Streptococcus pneumoniae was the most frequently identified pathogen in both blood and pleural fluid cultures.
- Previous antibiotic use was found to negatively impact culture positivity.
Conclusions:
- The bacteriological profile of complicated pneumonia cases mirrors that of non-complicated pneumonia.
- Despite similar causative agents, children with complicated effusions experienced worse outcomes, suggesting factors beyond antibiotic resistance.
- Further research is needed to elucidate the reasons for poorer outcomes in these pediatric patients.
Context:
In São Paulo, pneumonia is the main infectious cause of death among children. Parapneumonic pleural effusion is a possible complication and has to be treated surgically when the patient does not respond to antibiotics.
Objective:
Assessment of the etiology of complicated parapneumonic pleural effusions that needed surgical intervention.
Type Of Study:
Retrospective study.
Setting:
University hospital of the University of São Paulo.
Method:
Analysis of 4,000 files on children hospitalized with pneumonia from November 1986 to November 1996 had shown that 115 of these children presented a total of 117 cases of pleural empyema that required surgical procedures. The children's clinical condition was assessed in relation to radiological findings and to their nutrition and immunization status. Previous antimicrobial therapy and pleural effusion bacterioscopy were also evaluated.
Results:
Streptococcus pneumoniae was the agent found most commonly, as frequently in blood cultures as in pleural effusions.
Discussion:
Data on vaccination coverage, birth weight and nutritional status are analyzed and compared to other publications. We observed that pleural effusion has a high potential for discomfort, and in most cases it is not a complication of the first pulmonary disease episode. Previous use of antibiotics interfered with culture positivity. The agent most frequently found was Streptococcus pneumoniae, which is in accordance with the findings from other authors. Nonetheless, the antibiotics used to treat the patients after the procedure were the same used in non-complicated pneumonias, which has led us to conclude that the worse outcome in this cases was not due to drug resistance.
Conclusion:
The bacteriological profile in our series of complicated pneumonia cases was similar to what has been described for non-complicated pneumonia cases. Future studies will be necessary to determine why these children presented a worse outcome.
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