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Retropharyngeal abscess in children: the emerging role of group A beta hemolytic streptococcus
Nahed M Abdel-Haq1, Ashraf Harahsheh, Basim L Asmar
1Division of Infectious Diseases, Children's Hospital of Michigan, 3901 Beaubien Boulevard, Detroit, MI 48201, USA. nabdel@dmc.org
Insights
Retropharyngeal abscess (RPA) cases have significantly increased, with a notable rise in Group A beta-hemolytic streptococcus (GABHS) infections. Treatment involved antibiotics and drainage, leading to full recovery in all pediatric patients.
Area of Science:
- Pediatric Infectious Diseases
- Otolaryngology
- Microbiology
Background:
- Retropharyngeal abscess (RPA) incidence has recently increased in pediatric hospital admissions.
- A 4.5-fold rise in RPA cases was observed over an 11-year period (1993-2003).
- The majority of cases occurred within the latter four years of the study period.
Purpose of the Study:
- To review the incidence of retropharyngeal abscess (RPA) in children.
- To analyze the microbiology of pediatric RPA cases.
- To evaluate treatment outcomes for pediatric RPA.
Main Methods:
- Retrospective review of medical records for children diagnosed with RPA.
- Analysis of microbiological data from abscess specimens.
- Review of treatment regimens and patient outcomes.
Main Results:
- Sixty-seven pediatric RPA cases were identified, showing a 4.5-fold increase in incidence.
- Computed tomography confirmed inflammatory or ring-enhancing lesions in all patients.
- Group A beta-hemolytic streptococcus (GABHS) was recovered in 54% of specimens, a significant increase from previous periods.
- Treatment included intravenous and oral antibiotics, with abscess drainage in 76% of cases.
- All patients achieved a full recovery.
Conclusions:
- Retropharyngeal abscess (RPA) is an increasing polymicrobial infection in children.
- A significant association was found between increased RPA incidence and higher recovery rates of GABHS.
- Further investigation is needed to determine if increased GABHS strain invasiveness contributes to the rising incidence.
Background:
Because of a recent increase in the number of cases of retropharyngeal abscess (RPA) admitted to our hospital, we reviewed the incidence, microbiology, and treatment outcome of RPA during an 11-year period (1993-2003).
Methods:
A retrospective review of medical records of children with RPA.
Results:
Sixty-seven children (46 males) with RPA were identified, representing a 4.5-fold increase in incidence over a previous 12-year period. The majority (66%) of patients presented during the last 4 years. Computed tomography revealed inflammatory or ring enhancing lesion in all patients. Abscess drainage was performed in 51 (76%) patients. A total of 101 isolates (84 aerobes, 17 anaerobes) were recovered from 41 specimens (a mean of 2.5 isolates per specimen). Group A beta hemolytic streptococcus (GABHS) was recovered from 22 (54%) of 41 specimens compared with 6 (35%) of 17 over the previous 12 years. Treatment included i.v. antibiotics: ampicillin/sulbactam or clindamycin plus either cefuroxime or ceftriaxone, followed by oral amoxicillin/clavulanate or clindamycin. All patients recovered.
Conclusions:
RPA, an aerobic/anaerobic polymicrobial infection, is increasing in frequency and is associated with increased recovery of GABHS in our patients. Whether this rise in incidence is due to increased invasiveness of GABHS strains is to be determined.
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