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Related Concept Videos

Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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:
Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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...
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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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Methods to Evaluate Cytotoxicity and Immunosuppression of Combustible Tobacco Product Preparations
09:25

Methods to Evaluate Cytotoxicity and Immunosuppression of Combustible Tobacco Product Preparations

Published on: January 10, 2015

Associations between tobacco and tuberculosis.

C Y Chiang1, K Slama, D A Enarson

  • 1International Union Against Tuberculosis and Lung Disease, Paris, France.

The International Journal of Tuberculosis and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
|March 14, 2007
PubMed
Summary

Smoking significantly increases tuberculosis (TB) risk and severity. Quitting smoking is crucial for TB patients to improve outcomes and reduce mortality.

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Area of Science:

  • Public Health
  • Epidemiology
  • Respiratory Medicine

Background:

  • The link between smoking and tuberculosis (TB) has been recognized for over a century.
  • Both active and passive tobacco smoke exposure are associated with TB infection and disease progression.
  • Previous research has substantially reported the association between smoking and developing active TB disease.

Purpose of the Study:

  • To synthesize evidence on the causal association between smoking and tuberculosis.
  • To examine how smoking influences the clinical presentation and outcomes of TB.
  • To underscore the importance of smoking cessation for TB patients.

Main Methods:

  • Review of historical and contemporary research investigating smoking and TB.
  • Analysis of studies examining the impact of smoking on TB infection, disease development, and clinical manifestations.
  • Evaluation of evidence linking smoking to TB relapse and mortality.

Main Results:

  • Smokers exhibit increased risk for TB infection and progression to active disease.
  • Smoking is associated with specific clinical features of TB, including upper lobe involvement, cavities, and positive sputum cultures.
  • Smokers face higher risks of TB relapse and mortality compared to non-smokers.
  • Smoking is linked to less frequent isolated extra-pulmonary TB presentations.

Conclusions:

  • There is sufficient evidence to establish a causal relationship between smoking and TB disease.
  • Smoking adversely affects TB clinical manifestations, treatment outcomes, and mortality.
  • Counselling and cessation support are essential components of care for patients with tuberculosis.