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Related Concept Videos

Asthma-I: Introduction01:29

Asthma-I: Introduction

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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
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What is Natural Selection?01:32

What is Natural Selection?

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Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
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Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
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Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

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Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
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Asthma-III: Symptoms and Complications01:24

Asthma-III: Symptoms and Complications

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Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma
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Asthma-IV: Diagnostic and Management01:30

Asthma-IV: Diagnostic and Management

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The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
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Acupuncture in a Rat Model of Asthma
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Asthma and Rotary-Wing Military Aircrew Selection.

William D Porter, Nicole Powell-Dunford, Grant D Wilde

    Aerospace Medicine and Human Performance
    |June 23, 2019
    PubMed
    Summary

    Asthma prevalence in the UK has significantly increased, impacting military aviation recruitment. This study analyzes historical birth and asthma data to inform recruitment policies for future military candidates.

    Area of Science:

    • Public Health
    • Epidemiology
    • Military Medicine

    Background:

    • Reports indicate a rising prevalence of asthma in recent decades.
    • Individuals with a history of asthma are typically disqualified from UK military aviation training.
    • This exclusion impacts the pool of eligible military service candidates.

    Purpose of the Study:

    • To assess the impact of asthma prevalence on the available pool of military service candidates in the UK.
    • To analyze trends in asthma prevalence across birth-year cohorts from 1924 to 1995.
    • To estimate the number of individuals potentially unfit for military aviation due to asthma.

    Main Methods:

    • Collected UK live birth data from 1916 to 2016.
    • Reviewed peer-reviewed literature on UK asthma prevalence trends.

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  • Employed regression techniques to estimate asthma-related unfitness in birth cohorts (2001-2016).

    • Main Results:

    • UK live births averaged ~802,000 annually (1916-2016).
    • Asthma prevalence increased from 2.3/1000 (1924 cohort) to 29.8/1000 (1990 cohort).
    • Estimated significant numbers potentially unfit for military aviation due to asthma.

    Conclusions:

    • Asthma remains a significant public health concern in the UK.
    • Military services require accurate diagnostics for risk mitigation.
    • Balancing individual participation with mission readiness is crucial for military aviation recruitment.