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Related Concept Videos

Pneumonia I: Introduction01:29

Pneumonia I: Introduction

20
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...
20
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

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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...
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Atypical Pneumonia01:14

Atypical Pneumonia

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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...
78
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

9
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...
9
Pneumonia III: Complications and Assessment01:30

Pneumonia III: Complications and Assessment

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Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
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Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

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The pathophysiology of pneumonia involves the following steps:
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Related Experiment Video

Updated: Apr 25, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
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Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

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Fulminant pneumococcal infection.

Ryo Naito1, Tetsuro Miyazaki1, Kazunori Kajino2

  • 1Department of Cardiovascular Medicine, Juntendo University, Tokyo, Japan.

BMJ Case Reports
|August 24, 2014
PubMed
Summary
This summary is machine-generated.

Fulminant pneumococcal infection, a rapid and fatal condition, can affect immunocompromised individuals. This case highlights the aggressive nature of pneumococcal pneumonia in an elderly patient despite prompt treatment.

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Area of Science:

  • Infectious Diseases
  • Pulmonology
  • Pathology

Background:

  • Fulminant pneumococcal infection is a severe, often fatal, outcome of Streptococcus pneumoniae infection.
  • It disproportionately affects immunocompromised individuals, including asplenic patients and those on immunosuppressive therapy.

Observation:

  • A 73-year-old Japanese male with coronary stents and a history of atrial flutter ablation presented with acute dyspnea.
  • Diagnosis of pneumococcal pneumonia was confirmed via urine antigen testing and CT scan.
  • Despite aggressive antibiotic and supportive care, the patient's condition rapidly deteriorated.

Findings:

  • The patient succumbed to the infection within 18 hours of hospital admission.
  • Autopsy findings provided detailed insights into the pathological progression of the fulminant infection.

Implications:

  • This case underscores the critical need for rapid diagnosis and aggressive management of pneumococcal pneumonia, even in patients with comorbidities.
  • It highlights the potential for swift and fatal progression of pneumococcal infections, emphasizing the vulnerability of certain patient populations.
  • The report contributes to understanding the clinical and pathological spectrum of fulminant pneumococcal disease.