[Invasive pneumococcal pneumonia in children 0-24 months old: does bacterial resistance affect outcome]

M C Pírez García1, G Giachetto Larraz, C Romero Rostagno

  • 1Clínica Pediátrica, Hospital Pediátrico, Centro Hospitalario Pereira Rossell, Montevideo, Uruguay. mcpirez@yahoo.com

Insights

Penicillin-resistant Streptococcus pneumoniae did not impact pneumonia outcomes in young Uruguayan children. This study found no significant differences in complications or hospital stay for children with susceptible versus resistant strains.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Microbiology

Background:

  • Community-acquired bacterial pneumonia is a major cause of illness and death in Uruguay.
  • Streptococcus pneumoniae is the primary pathogen, with higher severity in children under two.
  • The impact of pneumococcal penicillin resistance on pneumonia outcomes remains unclear.

Purpose of the Study:

  • To compare outcomes in children aged 0-24 months with invasive pneumococcal pneumonia.
  • To assess the effect of penicillin-susceptible versus penicillin-resistant S. pneumoniae on disease severity and hospital stay.

Main Methods:

  • A retrospective study included 168 children (0-24 months) hospitalized with invasive pneumococcal pneumonia between 1998 and 2005.
  • Penicillin susceptibility was determined by Minimum Inhibitory Concentration (MIC).
  • Outcomes assessed included empyema, sepsis, septic shock, mechanical ventilation, death, and length of hospital stay.

Main Results:

  • Of 168 children, 90 had penicillin-susceptible S. pneumoniae and 78 had reduced susceptibility.
  • Groups were comparable in age, comorbidities, nutritional status, and initial antibiotic treatment.
  • No significant differences were observed in clinical outcomes or hospital stay duration between the groups.

Conclusions:

  • Penicillin resistance in S. pneumoniae did not adversely affect the clinical outcomes of invasive pneumonia in this cohort of young children.
  • These findings suggest that current treatment approaches may be effective despite rising resistance levels.
Abstract

Related Concept Videos

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...
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...
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...
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...
Pneumonia IV: Management01:28

Pneumonia IV: Management

The treatment of pneumonia varies based on its severity and the causative pathogen. Here is a structured approach to managing pneumonia, integrating pharmaceutical and supportive care strategies.
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
Pneumonia III: Complications and Assessment01:30

Pneumonia III: Complications and Assessment

Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following: