Fulminant bacterial meningitis

Michael Radetsky1

  • 1From the Department of Pediatrics, University of New Mexico School of Medicine, Presbyterian Medical Center, Albuquerque, New Mexico.

Abstract

Insights

Fulminant bacterial meningitis, a rare but deadly infection, causes rapid brain swelling and high mortality. Current medical interventions struggle to manage this aggressive host response.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Critical Care Medicine

Background:

  • Fulminant bacterial meningitis is a rare, aggressive host response to infection.
  • Characterized by sudden onset, rapid deterioration, and severe cerebral edema.
  • Associated with a high mortality rate exceeding 50%.

Purpose of the Study:

  • To clarify the nature of fulminant bacterial meningitis.
  • To review its medical management strategies.
  • To understand its persistent challenges despite medical advancements.

Main Methods:

  • Comprehensive literature search of medical publications since 1900.
  • Analysis of historical and contemporary case descriptions.
  • Review of management strategies and outcomes.

Main Results:

  • Fulminant meningitis affects all ages and is caused by various organisms.
  • Its incidence and clinical presentation remain unchanged since the preantibiotic era.
  • Explosive cerebral edema is unpredictable, with poorly understood pathophysiology.
  • Aggressive neuroresuscitation and adjunctive therapies have not improved outcomes for intracranial hypertension or herniation risk.

Conclusions:

  • Fulminant bacterial meningitis represents a significant challenge in medical intervention.
  • It highlights the complexities of aberrant host responses to infection.
  • Further research into pathophysiology and novel treatments is warranted.

Related Concept Videos

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...
15
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...
24
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...
199
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...
21
Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
15
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
22