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Related Concept Videos

Chronic Obstructive Pulmonary Disease01:24

Chronic 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...
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic 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...
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

Chronic 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...
Chronic Obstructive Pulmonary Disease-I: Introduction01:20

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.
Chronic Obstructive Pulmonary Disease II: Emphysema01:23

Chronic Obstructive Pulmonary Disease II: Emphysema

Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
Chronic Obstructive Pulmonary Disease-V: Management01:29

Chronic Obstructive Pulmonary Disease-V: Management

Managing Chronic Obstructive Pulmonary Disease (COPD) involves a multifaceted approach to reduce symptoms, prevent exacerbations, improve overall health status, and slow disease progression. Key strategies include lifestyle modifications, pharmacotherapy, supportive therapies, and, in some cases, surgery. Here is an overview of the primary COPD management strategies:
Smoking Cessation

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Related Experiment Video

Updated: Jun 12, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
07:10

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

Published on: August 24, 2019

Functional performance in chronic obstructive pulmonary disease declines with time.

Mary C Kapella1, Janet L Larson, Margaret K Covey

  • 1Department of Biobehavioral Science, University of Illinois at Chicago, Chicago, IL, USA.

Medicine and Science in Sports and Exercise
|June 15, 2010
PubMed
Summary
This summary is machine-generated.

People with chronic obstructive pulmonary disease experience a slow decline in daily activities. This decline is linked to reduced lung function and muscle strength, not symptom changes.

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Acupoint Application as a Traditional Chinese Medicine Treatment for Fatigue Associated with Chronic Obstructive Pulmonary Disease
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Acupoint Application as a Traditional Chinese Medicine Treatment for Fatigue Associated with Chronic Obstructive Pulmonary Disease

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Last Updated: Jun 12, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
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Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

Published on: August 24, 2019

Acupoint Application as a Traditional Chinese Medicine Treatment for Fatigue Associated with Chronic Obstructive Pulmonary Disease
04:24

Acupoint Application as a Traditional Chinese Medicine Treatment for Fatigue Associated with Chronic Obstructive Pulmonary Disease

Published on: September 5, 2025

Area of Science:

  • Pulmonary Medicine
  • Gerontology
  • Rehabilitation Science

Background:

  • Chronic obstructive pulmonary disease (COPD) is known to cause functional performance decline.
  • The rate of this decline and its contributing factors in COPD patients are not well understood.
  • Functional performance encompasses daily activities individuals choose to engage in.

Purpose of the Study:

  • To quantify the rate of decline in functional performance in COPD patients.
  • To investigate the influence of disease severity, body composition, symptoms, and functional capacity on this decline.

Main Methods:

  • 108 COPD patients were followed for 3 years.
  • Assessments included functional performance (Functional Performance Inventory), spirometry, lung volumes, diffusion capacity, body composition (DXA), dyspnea/fatigue (CRDQ), and functional capacity (6MWD, isokinetic strength, handgrip, MIP).
  • 88 participants completed an average of 2.7 years of follow-up.

Main Results:

  • Significant declines were observed in functional performance (P=0.001), FEV1/FVC (P<0.0001), diffusion capacity (P<0.0001), and muscle strength (P<0.0001).
  • Dyspnea, fatigue, and functional capacity showed no significant decline but exhibited wide individual variability.
  • Hierarchical regression indicated that declines in FEV1/FVC, 6MWD, and muscle strength predicted 31% of the variance in functional performance decline.

Conclusions:

  • COPD patients experience a gradual decrease in functional performance over time.
  • This decline is associated with worsening lung function and increased body fat.
  • Symptoms like dyspnea and fatigue remained relatively stable and did not correlate with functional performance decline.