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Microbial Flora and Antibiotic Resistance in Peritonsillar Abscesses in Upstate New York.

AbstractOBJECTIVES:
To identify the common bacteria in recent peritonsillar abscesses and the prevalence of antibiotic resistance and compare both between adults and children.
METHODS:
This is a retrospective chart review at a single academic institution of patients who underwent either incision and drainage or tonsillectomy for a peritonsillar abscess between 2002 and 2012 (n=69). Medical records were reviewed for cultures, comorbidities, and drainage procedures.
RESULTS:
Cultures obtained from 62.32% of peritonsillar abscesses were polymicrobial, and 34.78% were monomicrobial. The most common pathogens were β-hemolytic Streptococcus (31.88%), α-hemolytic Streptococcus (21.74%), Neisseria (14.49%), and Streptococcus milleri (13.04%). Group A β-hemolytic streptococcus was more common in children and Streptococcus milleri was more common in adults. Alpha-hemolytic streptococcus was resistant to clindamycin (6.67%) and erythromycin (6.67%). Streptococcus milleri was resistant to clindamycin (11.11%) and erythromycin (11.11%). Staphylococcus was resistant to penicillin (37.5%), oxacillin (25%), erythromycin (25%), and clindamycin (12.5%).
CONCLUSIONS:
β- and α-hemolytic Streptococci, Neisseria, and Streptococcus milleri are the most common pathogens. Streptococcus milleri is more common in adults, and β-hemolytic streptococcus is more common in children. Resistance to clindamycin and erythromycin is common in Streptococci and Staphylococci, and penicillin resistance is common in Staphylococci.
AuthorsAnn Woodhouse Plum, Anthony J Mortelliti, Ronald E Walsh
JournalThe Annals of otology, rhinology, and laryngology (Ann Otol Rhinol Laryngol) Vol. 124 Issue 11 Pg. 875-80 (Nov 2015) ISSN: 0003-4894 [Print] United States
PMID26023143 (Publication Type: Journal Article)
Copyright© The Author(s) 2015.
Chemical References
  • Anti-Bacterial Agents
Topics
  • Adolescent
  • Adult
  • Age Distribution
  • Anti-Bacterial Agents (pharmacology)
  • Dissection (methods)
  • Drainage (methods)
  • Drug Resistance, Bacterial
  • Female
  • Humans
  • Male
  • Microbial Sensitivity Tests (methods, statistics & numerical data)
  • Neisseria (drug effects, isolation & purification)
  • New York (epidemiology)
  • Outcome Assessment, Health Care
  • Peritonsillar Abscess (drug therapy, epidemiology, microbiology, surgery)
  • Retrospective Studies
  • Sex Factors
  • Streptococcus (classification, drug effects, isolation & purification)
  • Tonsillectomy (methods)

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