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Related Concept Videos

Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
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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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COPD: Pathogenesis and Clinical Features01:20

COPD: Pathogenesis and Clinical Features

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Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
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The Bronchial Tree01:23

The Bronchial Tree

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The human bronchi and bronchial tree play a crucial role in the respiratory system, facilitating the exchange of oxygen and carbon dioxide. Let's delve into the intricate structure and functions of these respiratory components.
The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi. At a point called the carina, it bifurcates into two primary bronchi. The right primary bronchus is wider, shorter, and more vertical than the left primary...
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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.
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Breathing01:05

Breathing

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The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
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Related Experiment Video

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A Reversible, Non-invasive Method for Airway Resistance Measurements and Bronchoalveolar Lavage Fluid Sampling in Mice
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Small airways disease: time for a revisit?

James A Stockley1, Brendan G Cooper1, Robert A Stockley2

  • 1Department of Lung Function and Sleep.

International Journal of Chronic Obstructive Pulmonary Disease
|August 30, 2017
PubMed
Summary

Diagnosing chronic inflammatory lung disease early is crucial. Tests for small airway function may help identify individuals at risk for Chronic Obstructive Pulmonary Disease (COPD) before significant lung damage occurs.

Keywords:
COPDairflow obstructionearly diseaseemphysemaphysiologysmall airways

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Automated Measurement of Pulmonary Emphysema and Small Airway Remodeling in Cigarette Smoke-exposed Mice
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Area of Science:

  • Pulmonary Medicine
  • Respiratory Physiology

Background:

  • Delayed diagnosis of chronic inflammatory lung conditions, especially COPD, hinders understanding of disease mechanisms and effective therapy development.
  • Most COPD patients are diagnosed with moderate-to-severe airflow obstruction, leaving early disease processes poorly understood.
  • Identifying individuals at risk for COPD before airflow obstruction develops is a key research and clinical goal.

Purpose of the Study:

  • To critically appraise commonly utilized tests of small airways function.
  • To highlight the importance and potential applications of small airways tests in COPD.
  • To identify remaining knowledge gaps for the use of small airways tests in COPD.

Main Methods:

  • Review of existing literature on small airways function tests.
  • Critical appraisal of physiological tests for assessing small airways.
  • Analysis of factors limiting the routine adoption of these tests.

Main Results:

  • Damage to small airways may precede airflow obstruction and emphysema in COPD.
  • Existing small airways tests face challenges like result variability and lack of validated reference ranges.
  • Emerging methodologies and increased equipment availability may improve the utility of small airways tests, particularly in early disease stages.

Conclusions:

  • Small airways tests show promise for identifying individuals at risk for COPD, especially in early disease.
  • Overcoming variability and establishing reference ranges are crucial for wider adoption.
  • Further research is needed to fully integrate small airways function tests into COPD research and clinical practice.