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Related Concept Videos

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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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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Other Pulmonary Disorders01:17

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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.
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Pulmonary Tuberculosis IV01:26

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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 III01:31

Pulmonary Tuberculosis III

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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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Related Experiment Video

Updated: Nov 22, 2025

Generation of Electronic Cigarette Aerosol by a Third-Generation Machine-Vaping Device: Application to Toxicological Studies
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Vaping Associated Pulmonary Nontuberculous Mycobacteria.

Laura Chen1, Raanan Arens2, Ambika G Chidambaram3

  • 1Department of Pediatrics, Section of Respiratory, Allergy-Immunology & Sleep Medicine, Yale School of Medicine, New Haven, CT, USA.

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Summary

Vaping may increase the risk of nontuberculous mycobacteria (NTM) lung infections, even in healthy individuals. This study reports three immunocompetent patients with co-occurring vaping use and NTM pulmonary disease.

Keywords:
E-cigaretteNTMPediatricsPulmonology

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Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Toxicology

Background:

  • E-cigarette or vaping product use associated lung injury (EVALI) is a growing health concern.
  • The exact causes of EVALI and the rise in nontuberculous mycobacteria (NTM) pulmonary disease are not fully understood.
  • NTM infections are typically seen in immunocompromised individuals.

Observation:

  • This study presents three cases of immunocompetent individuals who developed pulmonary NTM infection.
  • All three patients had a history of vaping nicotine and/or marijuana-containing products.
  • Isolated pathogens included Mycobacterium avium complex, M. xenopi, and M. gordonae.

Findings:

  • Pulmonary NTM infection occurred concurrently with vaping in three otherwise healthy individuals.
  • Vaping may potentially increase susceptibility to NTM colonization and subsequent infection.
  • The study discusses potential mechanisms linking vaping-induced lung injury and NTM pulmonary disease.

Implications:

  • Highlights a potential, underreported association between vaping and NTM infections.
  • Suggests that vaping could be a risk factor for NTM pulmonary disease in immunocompetent populations.
  • Warrants further investigation into the immunological effects of vaping on lung health.