Effect of prophylactic amoxicillin on tonsillar bacterial pathogens after (adeno)tonsillectomy in children

Denis R Katundu1, Desderius Chussi2, Christa E van der Gaast-de Jongh3

  • 1Department of Otolaryngology, Kilimanjaro Christian Medical Centre, Kilimanjaro, Tanzania; Department of Otolaryngology, Kilimanjaro Christian Medical University College, Kilimanjaro, Tanzania; Department of Otolaryngology, Head and Neck Surgery, Nijmegen, The Netherlands.

Insights

Post-tonsillectomy (AT) amoxicillin did not reduce the number of oropharyngeal microorganisms in children. This study found no clinical benefit of prophylactic antibiotics after AT, highlighting the need to reconsider their use in limited resource settings.

Area of Science:

  • Otolaryngology
  • Infectious Diseases
  • Pediatric Surgery

Background:

  • Antibiotic resistance is a growing global concern.
  • Prophylactic antibiotics are often used post-(adeno)tonsillectomy (AT) in resource-limited settings, despite questionable efficacy.
  • This study addresses the use of amoxicillin after AT in children.

Purpose of the Study:

  • To evaluate the effect of prophylactic amoxicillin on post-(adeno)tonsillectomy (AT) morbidity in children.
  • To determine if amoxicillin influences the number of oropharyngeal microorganisms after AT.
  • To provide evidence-based guidance on antibiotic use in pediatric AT.

Main Methods:

  • Secondary analysis of a double-blinded, randomized controlled trial.
  • Children aged 2-14 years with chronic tonsillitis or sleep apnea received placebo or amoxicillin for 5 days post-AT.
  • Polymerase chain reaction (PCR) analyzed pre- and post-operative samples for key tonsillitis pathogens.

Main Results:

  • PCR analysis included 109 patients in the amoxicillin group and 115 in the placebo group.
  • A high percentage of patients in both groups had positive PCR tests before and after surgery (91% vs 92% pre-op, 87% vs 90% post-op).
  • Both amoxicillin and placebo groups showed a decrease in the total number of detected pathogens after surgery.

Conclusions:

  • Prophylactic amoxicillin administered after (adeno)tonsillectomy (AT) in children did not significantly alter the oropharyngeal microbial load compared to placebo.
  • The findings suggest that routine prophylactic amoxicillin is not clinically beneficial in this context.
  • This research questions the current practice of antibiotic prophylaxis in pediatric AT, especially in resource-limited environments.
Abstract

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