Impact of resistant pneumococcus on rates of acute mastoiditis

P J Antonelli1, N Dhanani, C M Giannoni

  • 1Department of Otolaryngology, University of Florida College of Medicine,Gainesville 32610, USA.

Abstract

Insights

The rate of acute mastoiditis is increasing, potentially due to antibiotic-resistant Streptococcus pneumoniae. This study highlights a concerning trend in pediatric ear infections.

Area of Science:

  • Otolaryngology
  • Infectious Diseases
  • Pediatrics

Background:

  • Acute mastoiditis is a serious complication of middle ear infections.
  • The rise of antibiotic-resistant bacteria poses a significant threat to public health.
  • Understanding trends in mastoiditis is crucial for effective treatment strategies.

Purpose of the Study:

  • To investigate the trend of acute mastoiditis incidence.
  • To determine if antibiotic-resistant Streptococcus pneumoniae contributes to this trend.

Main Methods:

  • Retrospective chart review of acute mastoiditis cases from 1987-1997.
  • Analysis of case numbers stratified by pathogen and year.
  • Comparison of mastoiditis rates against yearly otorhinolaryngology admissions.

Main Results:

  • A linear increase in acute mastoiditis rates was observed over the study period.
  • Pneumococcal-related mastoiditis rates also showed a significant linear increase.
  • Penicillin-resistant Streptococcus pneumoniae caused most pneumococcal mastoiditis cases in recent years.

Conclusions:

  • Antibiotic-resistant Streptococcus pneumoniae is a likely factor in the rising incidence of acute mastoiditis.
  • This finding underscores the need for vigilant monitoring and updated treatment guidelines.

Related Concept Videos

Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Bacterial Meningitis II: Pathophysiology01:26

Bacterial Meningitis II: Pathophysiology

Bacterial meningitis typically begins when pathogens such as Neisseria meningitidis and Streptococcus pneumoniae colonize the nasopharynx and invade the bloodstream. This process is facilitated by bacterial virulence factors, such as polysaccharide capsules, which resist phagocytosis and complement-mediated killing. Less commonly, bacteria reach the central nervous system via contiguous spread from infections like otitis media or sinusitis, through congenital or acquired dural defects, or...
Pneumonia I: Introduction01:29

Pneumonia I: Introduction

Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...