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Peritonsillar abscess: bacteriological evaluation.

K Jokinen, P Sipilä, A M Jokipii

    Clinical Otolaryngology and Allied Sciences
    |February 1, 1985
    PubMed
    Summary
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    Peritonsillar abscesses commonly involve mixed bacterial infections, with anaerobic bacteria playing a key role. This study analyzed pus from 41 abscesses to understand the microbial causes.

    Area of Science:

    • Otolaryngology
    • Microbiology
    • Infectious Diseases

    Background:

    • Peritonsillar abscess (PTA) is a common complication of tonsillitis.
    • The specific microbial etiology of PTA is not fully elucidated.
    • Understanding the bacterial flora is crucial for effective treatment and management.

    Purpose of the Study:

    • To bacteriologically examine pus from peritonsillar abscesses.
    • To identify the predominant bacterial species involved in PTA.
    • To determine the role of anaerobic bacteria in peritonsillar abscesses.

    Main Methods:

    • Pus samples from 41 patients with peritonsillar abscesses were collected.
    • Bacteriological examination included identification of both anaerobic and aerobic bacteria.

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  • Culture and species identification were performed for each specimen.

    • Main Results:

    • A mixed bacterial flora was identified in the majority of peritonsillar abscesses (mean 3.0 species per abscess).
    • Anaerobic and aerobic bacteria were co-isolated in 61% of cases.
    • Beta-hemolytic streptococci were found in 43.9% of cases, with Streptococcus pyogenes group A in 24.4%.

    Conclusions:

    • Peritonsillar abscess is predominantly caused by polymicrobial infections.
    • Anaerobic bacteria are significant contributors to the pathogenesis of peritonsillar abscess.
    • Findings support a mixed bacterial etiology, influencing treatment strategies and potential indications for tonsillectomy.