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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

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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

Other Pulmonary Disorders

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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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Overview of Pulmonary Circulation01:19

Overview of Pulmonary Circulation

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The pulmonary circulation is a vital system in our body that acts as a bridge between the respiratory and cardiovascular systems. It serves as a transport network for deoxygenated blood from the heart to the lungs and then returns oxygen-rich blood back to the heart.
The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
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Factors Affecting Pulmonary Ventilation01:19

Factors Affecting Pulmonary Ventilation

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Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
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Standard Operating Procedure for Lyssavirus Surveillance of the Bat Population in Taiwan
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Pulmonary Histoplasmosis, Taiwan, 1997-2024.

Ting-Wei Kao, Shang-Chen Yang, Hsiang-Wei Hu

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    Summary
    This summary is machine-generated.

    Pulmonary histoplasmosis is emerging in Taiwan, a previously nonendemic region. This study highlights increased cases, often in immunocompetent individuals without travel history, necessitating greater clinical awareness.

    Keywords:
    Histoplasma capsulatumTaiwandimorphic fungifungihistoplasmosisnon-endemic regionspulmonary mycosis

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    Area of Science:

    • Infectious Diseases
    • Pulmonology
    • Epidemiology

    Background:

    • Pulmonary histoplasmosis traditionally occurs in endemic areas.
    • Taiwan has historically been considered nonendemic for histoplasmosis.
    • Recent observations indicate a rise in histoplasmosis cases in Taiwan.

    Purpose of the Study:

    • To investigate the emergence and characteristics of pulmonary histoplasmosis in Taiwan.
    • To analyze patient demographics, clinical presentation, and outcomes.
    • To assess trends in case identification over time.

    Main Methods:

    • Retrospective study of adult patients with pathologically confirmed pulmonary histoplasmosis.
    • Data collected from June 1997 to December 2024 in Taiwan.
    • Analysis of 14 cases with lung involvement, including demographics, travel history, immune status, and radiological findings.

    Main Results:

    • 14 adult cases of pulmonary histoplasmosis identified, with a mean age of 56.6 years.
    • A significant proportion (78.6%) lacked travel history to endemic regions; 71.4% were immunocompetent.
    • Nodular lesions were predominant (85.7%), with left upper lobe involvement being most common (28.6%).
    • Most patients (78.6%) received antifungal therapy, primarily voriconazole, with favorable outcomes (one death).
    • Case identification rates increased notably since 2015.

    Conclusions:

    • Pulmonary histoplasmosis is emerging in Taiwan, challenging its nonendemic status.
    • The findings underscore the importance of considering histoplasmosis in patients presenting with compatible symptoms, irrespective of travel history or immune status.
    • Heightened clinical suspicion is crucial for early diagnosis and management in previously nonendemic regions.