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Asthma-I: Introduction

Asthma-I: Introduction

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...

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: Pathogenesis and Management

Asthma: Pathogenesis and Management

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.

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:

Chronic Obstructive Pulmonary Disease-I: Introduction

Chronic Obstructive Pulmonary Disease-I: Introduction

Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.

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Related Experiment Video

Updated: Jun 5, 2025

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

Published on: August 7, 2017

Childhood lung function is associated with adolescent-onset and persistent asthma.

Hans Jacob L Koefoed^1,2,3, Anhar Ullah⁴, Jenny Hallberg^3,5

¹University of Groningen, University Medical Center Groningen, Beatrix Children's Hospital, Department of Pediatric Pulmonology and Pediatric Allergology, Groningen, the Netherlands.

ERJ Open Research

|December 10, 2024

Summary

Children with better lung function at school age have a lower risk of developing asthma later in adolescence. This suggests that impaired lung function in childhood may contribute to asthma onset and persistence.

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Last Updated: Jun 5, 2025

Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels

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Published on: August 7, 2017

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

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Published on: April 13, 2010

Area of Science:

Pediatric Pulmonology
Epidemiology
Respiratory Health

Background:

Asthma is linked to reduced lung function, but the relationship between childhood lung function and adolescent asthma is unclear.
Investigating early lung function as a predictor for adolescent asthma onset and persistence is crucial for understanding disease development.

Purpose of the Study:

To examine the association between lung function in childhood and the onset and persistence of asthma during adolescence.
To determine if early lung function metrics can predict future asthma development in teenagers.

Main Methods:

Utilized data from three population-based birth cohorts (BAMSE, PIAMA, MAAS) involving analyses at age 8 years.
Assessed forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC), and FEV1/FVC ratio.
Employed logistic regression and meta-analysis to evaluate associations with adolescent asthma onset and persistence.

Main Results:

Higher FEV1 % predicted and FEV1/FVC ratio at age 8 were linked to reduced odds of adolescent-onset asthma (OR 0.98 and 0.97, respectively).
These associations remained significant even in children without prior wheezing or asthma treatment.
Elevated FEV1/FVC ratio at age 8 also correlated with lower odds of persistent asthma into adolescence (OR 0.96).

Conclusions:

Better childhood lung function is associated with a decreased risk of adolescent-onset asthma, particularly in males.
Lower lung function in childhood may precede or contribute to the incidence and persistence of asthma.
These findings highlight the potential role of early lung development in asthma trajectories.