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Related Concept Videos

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 II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
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 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:
Pneumonia V: Nursing management and Prevention01:30

Pneumonia V: Nursing management and Prevention

Nursing management of pneumonia involves promoting airway patency, facilitating rest and conserving energy, encouraging fluid intake, maintaining nutrition, and educating patients.
The nurse must practice strict medical asepsis and adhere to infection control guidelines to minimize healthcare-associated infections.
Enhance airway patency
Position the patient correctly to facilitate drainage of the affected lung segments. Manual or mechanical percussion and vibration can also be employed.

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Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
11:32

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

Published on: February 23, 2014

Pneumocystis pneumonia.

Jang-Jih Lu1, Chao-Hung Lee

  • 1Department of Laboratory Medicine, China Medical University Hospital, Taichung, and Division of Clinical Pathology, Tri-Service General Hospital, Taipei, Taiwan.

Journal of the Formosan Medical Association = Taiwan Yi Zhi
|October 31, 2008
PubMed
Summary
This summary is machine-generated.

Pneumocystis pneumonia (PcP) is a fungal infection caused by Pneumocystis jirovecii, primarily affecting immunocompromised individuals. Genetic typing of P. jirovecii aids in understanding PcP epidemiology and infection recurrence.

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Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
03:22

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases

Published on: March 1, 2024

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Last Updated: Jun 28, 2026

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
11:32

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

Published on: February 23, 2014

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases
03:22

Microbiological Rapid On-Site Evaluation for Pulmonary Infectious Diseases

Published on: March 1, 2024

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Immunology

Background:

  • Pneumocystis pneumonia (PcP) is caused by Pneumocystis jirovecii, a fungus implicated in opportunistic infections.
  • PcP remains a leading infection in individuals with Acquired Immunodeficiency Syndrome (AIDS), despite advancements in therapy.
  • Genetic variations in P. jirovecii, identified through rRNA gene sequencing, have revealed over 60 types, aiding in epidemiological studies.

Purpose of the Study:

  • To explore the classification and epidemiology of Pneumocystis jirovecii.
  • To detail diagnostic methods for Pneumocystis pneumonia.
  • To review treatment and prophylaxis options for PcP.

Main Methods:

  • Nucleotide sequence variations in the internal transcribed spacer region of rRNA genes were analyzed to identify P. jirovecii types.
  • Diagnosis involved clinical symptoms, chest radiography, and microscopic examination of sputum or bronchoalveolar lavage fluid.
  • Polymerase chain reaction (PCR), particularly nested PCR targeting the mitochondrial rRNA gene, was employed for sensitive and specific detection.

Main Results:

  • Over 60 distinct types of P. jirovecii were identified based on rRNA gene variations.
  • Nucleotide sequencing proved valuable in tracking PcP outbreaks and identifying re-infections with new types.
  • Nested PCR demonstrated high sensitivity and specificity for PcP diagnosis.

Conclusions:

  • P. jirovecii exhibits significant genetic diversity, impacting PcP epidemiology.
  • Accurate diagnosis of PcP relies on sensitive detection methods like nested PCR.
  • Trimethoprim-sulfamethoxazole is the primary treatment and prophylaxis for PcP, with alternative agents available.