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Asthma-II: Pathophysiology and Classification

Asthma-II: Pathophysiology and Classification

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:

Asthma-III: Symptoms and Complications

Asthma-III: Symptoms and Complications

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

Asthma-IV: Diagnostic and Management

Asthma-IV: Diagnostic and Management

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:

Asthma-IV: Nursing Management

Asthma-IV: Nursing Management

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.
First, in...

Asthma I: Introduction

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...

Asthma III: Clinical Manifestations

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...

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Related Experiment Video

Updated: Jul 6, 2026

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

Published on: April 13, 2010

Investigating severe and fatal asthma

R S Call¹, G Ward, S Jackson

¹Division of Asthma, Allergic Disease and Clinical Immunology, University of Virginia Health Sciences Center, Charlottesville.

The Journal of Allergy and Clinical Immunology

|December 1, 1994

Summary

Severe asthma patients may benefit from allergen avoidance, especially those with indoor allergen allergies. Investigating fungal infections and sensitization is crucial for identifying treatable causes in severe asthma cases.

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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

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Murine Model of Allergen Induced Asthma

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Published on: May 14, 2012

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Last Updated: Jul 6, 2026

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice

Published on: April 13, 2010

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Published on: November 4, 2010

Murine Model of Allergen Induced Asthma

Murine Model of Allergen Induced Asthma

Published on: May 14, 2012

Area of Science:

Allergy and Immunology
Pulmonology
Environmental Health

Background:

Severe asthma remains a significant challenge, often leading to oral steroid dependence.
Limited innovative approaches exist for understanding and treating severe asthma.
Two studies investigated severe asthma triggers and outcomes: allergen-free environment response and fatality analysis.

Purpose of the Study:

To assess severe asthma patient responses to an allergen-free environment for steroid reduction.
To identify factors associated with fatal asthma exacerbations.
To explore the role of indoor allergens and fungal infections in severe asthma.

Main Methods:

Prospective study: 17 severe asthma patients in an allergen-free room for steroid reduction, monitoring peak flow, treatment, and infection.
Retrospective study: Review of 9 fatal asthma cases, including house dust allergen levels and specific IgE antibody measurements.
Investigated indoor allergens, fungal colonization, and sinusitis as potential triggers.

Main Results:

Two patient groups emerged: those maintaining/improving peak flow on steroid reduction (indoor allergen allergic) and those deteriorating (unable to reduce steroids).
Deteriorating patients included those with fungal antigen sensitization and colonization, experiencing exacerbations.
Five of eight fatal asthma cases involved pre-death exposure to a relevant allergen at home.

Conclusions:

Steroid-dependent severe asthma patients allergic to inhalant allergens may improve with allergen avoidance.
Fungal antigen sensitization and infection are relevant in some severe asthma cases.
Investigating severe asthma cases for treatable causes like specific allergens and infections is recommended.