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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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Asthma-III: Symptoms and Complications01:24

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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:
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Asthma-IV: Diagnostic and Management01:30

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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:
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Asthma: Pathogenesis and Management01:20

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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-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-IV: Nursing Management01:30

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The nursing management of asthma is a comprehensive approach that relies heavily on the expertise and dedication of healthcare professionals. It involves thorough assessment, accurate diagnosis, strategic planning, effective implementation, and diligent evaluation. By meticulously following this step-by-step process, healthcare professionals play a crucial role in providing the best possible care and treatment for patients with asthma, enhancing their overall health and well-being.
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Acupuncture in a Rat Model of Asthma
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Environmental Causes of Asthma.

Donald W Cockcroft1

  • 1Division of Respiratory, Critical Care and Sleep Medicine, Department of Medicine, University of Saskatchewan, Saskatoon, Canada.

Seminars in Respiratory and Critical Care Medicine
|February 11, 2018
PubMed
Summary

Environmental factors like allergens and chemicals trigger asthma by causing airway inflammation and hyperresponsiveness. These exposures are now understood to cause the core features of asthma, not just symptoms.

Area of Science:

  • Environmental Medicine
  • Pulmonology
  • Immunology

Background:

  • Asthma pathogenesis involves airway inflammation and hyperresponsiveness (AHR).
  • IgE-mediated inhalant allergen exposure is the most common cause of asthma.
  • Environmental factors are increasingly recognized as fundamental causes of asthma.

Purpose of the Study:

  • To review environmental factors contributing to asthma development.
  • To elucidate the mechanisms by which environmental exposures induce asthma.
  • To differentiate asthma from other environmentally induced airway diseases.

Main Methods:

  • Review of scientific literature on environmental triggers of asthma.
  • Analysis of mechanisms including IgE-mediated responses and irritant effects.

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  • Comparison of asthma induction by allergens, chemicals, irritants, and other environmental exposures.

    • Main Results:

    • Allergens are primary causes of asthma, inducing inflammation and AHR via IgE.
    • Low-molecular-weight chemicals and irritants can also cause occupational and reactive airways dysfunction syndrome (RADS) asthma.
    • Tobacco smoke exposure in children promotes asthma development, while personal smoking and air pollution have smaller effects.

    Conclusions:

    • Environmental exposures, particularly allergens and sensitizers, are key drivers of asthma.
    • Understanding these environmental factors is crucial for asthma prevention and management.
    • Asthma is a complex disease with multiple environmental etiologies beyond simple symptom triggers.