Related Experiment Video
Updated: Jul 15, 2026
04:03
Alternative Therapy for Acute Exacerbation of Chronic Obstructive Pulmonary Disease: Moving Cupping Along Meridians
Published on: September 27, 2024
[Characteristics of pathophysiology in COPD].
Masaru Hasegawa1, Masaharu Nishimura
1Division of Respiratory Medicine, Hokkaido University Graduate School of Medicine.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|April 11, 2007
Summary
Chronic obstructive pulmonary disease (COPD) involves airflow limitation primarily in small airways. This leads to air trapping, increased lung volumes, and breathlessness as the condition worsens.
Area of Science:
- Pulmonary Medicine
- Respiratory Physiology
Context:
- Chronic obstructive pulmonary disease (COPD) significantly impacts small airways, leading to airflow limitation.
- Airway narrowing and emphysema are key pathological features of COPD.
Purpose:
- To elucidate the relationship between small airway pathology and physiological changes in COPD.
- To understand the mechanisms contributing to airflow limitation and breathlessness in COPD patients.
Summary:
- COPD is characterized by airflow limitation, predominantly in small airways (<2 mm diameter).
- Reduced FEV1 (%predicted) in COPD correlates strongly with decreased airway luminal area and increased wall thickness, especially in smaller airways.
- Disease progression causes air trapping, increased functional residual capacity (FRC), and reduced inspiratory capacity, which is linked to breathlessness.
Impact:
- Highlights the critical role of small airway disease in COPD pathophysiology.
- Provides insights into the physiological basis of breathlessness in COPD.
- Informs potential therapeutic targets for managing COPD progression and symptoms.
Related Concept Videos
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
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
Chronic Inflammation
01:20COPD: Pathogenesis and Clinical Features
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...
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...
01:23Chronic Obstructive Pulmonary Disease I: Introduction
Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
01:24Chronic Obstructive Pulmonary Disease
COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
01:24Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
01:19Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations
Chronic Obstructive Pulmonary Disease, or COPD, is a long-term condition marked by persistent and only partially reversible airflow limitation. It involves two overlapping conditions—chronic bronchitis and emphysema—which often co-appear but differ in dominant symptoms and underlying mechanisms.Chronic Bronchitis FeaturesChronic bronchitis presents with a persistent productive cough and thick, sometimes purulent mucus due to airway inflammation, enlarged mucus glands, and goblet cell...