Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

3.3K
Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History
3.3K
Pulmonary Function Tests01:25

Pulmonary Function Tests

1.1K
Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
1.1K
Assessment of Respiration01:23

Assessment of Respiration

2.3K
The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
2.3K
Chronic Obstructive Pulmonary Disease01:24

Chronic Obstructive Pulmonary Disease

3.0K
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...
3.0K
Atelectasis II: Pathophysiology01:10

Atelectasis II: Pathophysiology

25
Atelectasis develops when alveoli lose their air and collapse inward. Because lung tissue is naturally elastic, these air sacs shrink rather than remaining open. Collapsed alveoli are no longer ventilated, reducing their role in gas exchange. Blood flow may continue in these regions, creating a ventilation–perfusion mismatch. Clinical findings include decreased breath sounds, dullness to percussion, reduced chest expansion, and decreased tactile fremitus as sound transmission through...
25
Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations01:19

Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations

22
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...
22

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[CURRENT AND FUTURE PROSPECTS OF HOSPITAL-CLINIC COLLABORATION FOR ASTHMA].

Arerugi = [Allergy]·2026
Same author

Aeroallergen Sensitization and Its Changes in Adult Asthmatics Managed by Primary Care in the Western Yokohama, Japan.

Journal of asthma and allergy·2026
Same author

Thoracic Motion Analysis Using a TrueDepth Camera in Patients with Relapsing Polychondritis: A Pilot Study.

Healthcare (Basel, Switzerland)·2025
Same author

Improvements in Exhaled Partial Pressure Carbon Dioxide After Interventional Bronchoscopy: Two Case Reports of Malignant and Benign Bronchial Obstruction.

Internal medicine (Tokyo, Japan)·2025
Same author

Association between 6-min walk test and initiation of home oxygen therapy within 3 years in chronic obstructive pulmonary disease managed by primary care physicians.

Respiratory medicine·2025
Same author

First report of the real-time observation of mucociliary clearance using high-definition bronchoscopy.

Respiratory investigation·2025

Related Experiment Video

Updated: Apr 23, 2026

Author Spotlight: Integrating Alveolar-Capillary Reserve Measurements in Exercise Adaptation and Therapeutic Strategies
08:44

Author Spotlight: Integrating Alveolar-Capillary Reserve Measurements in Exercise Adaptation and Therapeutic Strategies

Published on: February 2, 2024

1.5K

The correlation between lung sound distribution and pulmonary function in COPD patients.

Masamichi Mineshita1, Hirotaka Kida1, Hiroshi Handa1

  • 1Division of Respiratory and Infectious Diseases, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan.

Plos One
|September 23, 2014
PubMed
Summary

In chronic obstructive pulmonary disease (COPD), lung sound intensity ratios correlate with airflow obstruction severity. Emphysema significantly impacts this association, highlighting its role in altered lung sound distribution.

More Related Videos

Machine Learning-Based Cough Tone Classification: Diagnostic Exploration of Chronic Obstructive Pulmonary Disease and Respiratory Tract Infections
06:22

Machine Learning-Based Cough Tone Classification: Diagnostic Exploration of Chronic Obstructive Pulmonary Disease and Respiratory Tract Infections

Published on: September 19, 2025

735
Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
02:09

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Published on: April 12, 2024

1.3K

Related Experiment Videos

Last Updated: Apr 23, 2026

Author Spotlight: Integrating Alveolar-Capillary Reserve Measurements in Exercise Adaptation and Therapeutic Strategies
08:44

Author Spotlight: Integrating Alveolar-Capillary Reserve Measurements in Exercise Adaptation and Therapeutic Strategies

Published on: February 2, 2024

1.5K
Machine Learning-Based Cough Tone Classification: Diagnostic Exploration of Chronic Obstructive Pulmonary Disease and Respiratory Tract Infections
06:22

Machine Learning-Based Cough Tone Classification: Diagnostic Exploration of Chronic Obstructive Pulmonary Disease and Respiratory Tract Infections

Published on: September 19, 2025

735
Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function
02:09

Multi-modal Pulmonary Imaging: Using Complementary Information from CT and Hyperpolarized 129Xe MRI to Evaluate Lung Structure-Function

Published on: April 12, 2024

1.3K

Area of Science:

  • Pulmonary Medicine
  • Respiratory Physiology
  • Medical Imaging Analysis

Background:

  • Lung sound intensity in COPD patients is influenced by emphysema, airway obstruction, and hyperinflation.
  • Bronchodilator inhalation has been observed to alter lung sound distribution alongside pulmonary function improvements.
  • Understanding lung sound distribution is crucial for physiological evaluation in COPD.

Purpose of the Study:

  • To investigate the association between lung sound distribution and pulmonary function in COPD patients.
  • To determine the effect of emphysematous lesions on this association.
  • To gather foundational knowledge for applying lung sound analysis in COPD physiological assessment.

Main Methods:

  • Evaluated pulmonary function tests and quantitative lung data (QLD) for upper- and lower-lung sound intensity in 47 stable male COPD patients.
  • Analyzed computed tomography (CT) scans from 39 patients to assess emphysematous lesions.

Main Results:

  • The ratio of lower to upper lung sound intensity (QLD) positively correlated with FEV1 %predicted and MEF50 %predicted.
  • These correlations were absent in COPD patients with dominant emphysema (% low attenuation area >40%).
  • Correlations were stronger in patients with less emphysema, indicating emphysema's impact on lung sound distribution.

Conclusions:

  • The ratio of lower- to upper-lung sound intensities decreases with increasing obstructive changes in COPD.
  • Emphysematous lesions significantly influence lung sound distribution patterns in COPD patients.
  • Lung sound analysis shows potential for physiological evaluation in COPD, modulated by emphysema severity.