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Related Concept Videos

Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
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Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the...
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Pulmonary Tuberculosis III01:31

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Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
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Transmission-based Precautions II: Airborne and Protective Environment01:25

Transmission-based Precautions II: Airborne and Protective Environment

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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
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System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis
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System for Efficacy and Cytotoxicity Screening of Inhibitors Targeting Intracellular Mycobacterium tuberculosis

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[Screening for tuberculosis].

J-P Van Vooren1, K Schepers

  • 1Unité de Traitement des Immunodéficiences, Hôpital Erasme, Bruxelles. jean.paul.van.vooren@erasme.ulb.ac.be

Revue Medicale De Bruxelles
|November 8, 2013
PubMed
Summary
This summary is machine-generated.

Identifying latent tuberculosis infections is key to eliminating the disease. Tuberculin skin tests and interferon-gamma release assays detect latent infection but don't predict active tuberculosis progression.

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Area of Science:

  • Immunology
  • Infectious Diseases
  • Microbiology

Context:

  • Tuberculosis control requires managing both active cases and latent infections.
  • Latent tuberculosis infections represent a significant reservoir for disease transmission.

Purpose:

  • To evaluate the utility of tuberculin skin tests (TST) and interferon-gamma release assays (IGRAs) in identifying latent tuberculosis infections.
  • To assess the predictive value of these tests for progression to active tuberculosis.

Summary:

  • Both TST and IGRAs detect latent tuberculosis infection by identifying immune responses to mycobacterial antigens.
  • IGRAs demonstrate higher specificity than TST in BCG-vaccinated populations, especially when vaccination occurred after one year of age.
  • Neither test reliably predicts the risk of progressing from latent to active tuberculosis.

Impact:

  • Current screening recommendations for latent tuberculosis infection should focus on high-risk groups and close contacts of infectious cases.
  • Improved diagnostic tools are needed to accurately predict progression from latent to active tuberculosis.