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Related Concept Videos

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...
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:
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...
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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 progression...
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...

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Related Experiment Videos

Initial presentations predict mortality in pulmonary tuberculosis patients--a prospective observational study.

Jia-Yih Feng1, Wei-Juin Su, Yu-Chi Chiu

  • 1Department of Chest Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, Republic of China.

Plos One
|September 21, 2011
PubMed
Summary

Tuberculosis (TB) mortality is high, especially in older patients with comorbidities. Clinical signs like fever and anorexia, and the absence of chronic cough, predict death during TB treatment.

Related Experiment Videos

Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Epidemiology

Background:

  • Tuberculosis (TB) remains a significant global public health concern with high mortality rates.
  • Advanced age and multiple comorbidities are established risk factors for fatal outcomes in TB patients.
  • The relationship between specific clinical presentations and mortality in pulmonary TB is not fully understood.

Purpose of the Study:

  • To investigate the association between clinical presentations and overall and early mortality in patients with pulmonary tuberculosis.
  • To identify independent predictors of mortality during anti-TB treatment.

Main Methods:

  • A prospective observational study involving 992 newly diagnosed, culture-proven pulmonary TB patients from multiple medical centers.
  • Collection of radiographic findings and clinical symptoms at diagnosis.
  • Analysis of factors associated with overall mortality and early mortality (within 30 days of treatment initiation).

Main Results:

  • Overall mortality was 19.7% (195/992), with 31.8% of deaths occurring early in treatment.
  • Independent predictors of overall mortality included older age, malignancy, renal insufficiency, fever, and anorexia.
  • Absence of chronic cough was associated with higher overall mortality, while presence of chronic cough and dyspnea were associated with lower early mortality.
  • Radiographic features did not significantly differ between survivors and non-survivors.

Conclusions:

  • Clinical presentations, specifically fever, anorexia, and the absence of chronic cough, are significant independent predictors of on-treatment mortality in pulmonary TB.
  • These clinical factors, alongside demographic characteristics, are crucial for risk stratification and management of TB patients.