A review of the treatment of bacterial meningitis

N I Girgis1, M E Kilpatrick, Z Farid

  • 1US Naval Medical Research Unit No. 3, Cairo, Egypt.

Insights

Ampicillin administered intravenously or intramuscularly shows comparable efficacy for meningitis treatment. Third-generation cephalosporins and aztreonam are effective, and dexamethasone reduces fatality rates in bacterial meningitis.

Area of Science:

  • Infectious Diseases
  • Pharmacology
  • Neurology

Background:

  • Meningitis remains a significant cause of mortality and morbidity worldwide.
  • Effective treatment strategies are crucial for improving patient outcomes.
  • Evaluating antibiotic efficacy and adjunctive therapies is essential for clinical practice.

Purpose of the Study:

  • To review experience in meningitis treatment at NAMRU-3, Cairo since 1967.
  • To compare intravenous versus intramuscular administration of ampicillin for meningitis.
  • To assess the efficacy and safety of ceftriaxone, aztreonam, and dexamethasone in meningitis management.

Main Methods:

  • Retrospective review of clinical experience with meningitis treatment.
  • Analysis of serum and cerebrospinal fluid concentrations of ampicillin.
  • Evaluation of treatment outcomes for ceftriaxone, aztreonam, and dexamethasone therapies.

Main Results:

  • Ampicillin efficacy and concentrations were comparable via intravenous and intramuscular routes.
  • Ceftriaxone demonstrated safety and efficacy when given intramuscularly once daily for acute bacterial meningitis.
  • Aztreonam was successful in treating Gram-negative meningitis caused by multi-resistant bacteria.
  • Dexamethasone, combined with antibacterial chemotherapy, significantly reduced fatality rates and morbidity in meningitis patients.

Conclusions:

  • Intramuscular ampicillin is a viable alternative to intravenous administration for meningitis.
  • Third-generation cephalosporins like ceftriaxone offer effective once-daily intramuscular treatment options.
  • Aztreonam provides a treatment option for meningitis due to multi-resistant Gram-negative organisms.
  • Dexamethasone is a valuable adjunctive therapy for reducing complications in bacterial meningitis.

Related Concept Videos

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:
Bacterial Meningitis01:24

Bacterial Meningitis

Bacterial meningitis is a severe infectious disease involving inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. It occurs when pathogenic bacteria cross the blood–brain barrier and enter the cerebrospinal fluid. Common causative organisms include Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae type b, Listeria monocytogenes, and Escherichia coli K1. The exact route of entry varies by pathogen and host condition.Routes of Entry...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
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...
Brain Abscess l: Introduction01:26

Brain Abscess l: Introduction

A brain abscess is a focal, intracerebral infection characterized by a localized collection of pus within the brain parenchyma, resulting from microbial invasion and the body’s inflammatory response. It progresses through stages: early and late cerebritis, followed by early and late capsule formation, reflecting tissue destruction, immune response, and eventual encapsulation.Etiology and PathogenesisCausative organisms vary with source and host factors, often involving polymicrobial infections,...