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Microbiological aspects on peritonsillar abscesses

A Flodström, H O Hallander

Scandinavian Journal of Infectious Diseases

|January 1, 1976

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Beta-hemolytic streptococci and anaerobic bacteria frequently cause quinsy (peritonsillar abscess). Combined antibiotic treatment and surgical drainage proved effective in managing this infection.

Area of Science:

Otolaryngology
Microbiology
Infectious Diseases

Background:

Quinsy, or peritonsillar abscess, is a common complication of tonsillitis.
The exact etiology and bacteriology of quinsy are not fully understood.
Previous studies have implicated various bacteria, but the role of anaerobes requires further investigation.

Purpose of the Study:

To investigate the bacteriology of unilateral quinsy.
To evaluate the role of Beta-hemolytic streptococci and anaerobic bacteria in quinsy etiology.
To assess the effectiveness of combined surgical drainage and antibiotic treatment.

Main Methods:

Syringe aspiration and bacteriological examination of pus from 37 patients with unilateral quinsy.
Isolation and identification of aerobic and anaerobic bacteria.

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Serological testing for streptococcal infections (AST-O, Streptozyme, ADNAse).

Main Results:

Beta-hemolytic streptococci were found in 17 abscesses, often with anaerobes.
Anaerobic bacteria were present in 28 abscesses, frequently polymicrobial.
Streptococcal serology was elevated in 22/30 cases, but one case with Beta-hemolytic streptococci showed negative serology.
A primary etiological role for anaerobes was suggested in some cases.

Conclusions:

Both Beta-hemolytic streptococci and anaerobic bacteria play significant roles in the etiology of quinsy.
Combined surgical drainage and antibiotic therapy (ampicillin or penicillin V) are effective treatments.
Further research may be needed to clarify the etiological role of anaerobes in specific cases.