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

Respiratory Volumes01:15

Respiratory Volumes

2.6K
Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
2.6K
Pulmonary Ventilation: Inhalation01:24

Pulmonary Ventilation: Inhalation

6.9K
Pulmonary ventilation is a vital process that ensures the exchange of oxygen and carbon dioxide in the lungs. It refers to the movement of air into and out of the lungs, enabling the body to obtain oxygen and remove waste carbon dioxide. In this article, we will explore the intricacies of pulmonary ventilation, including its underlying principles, mechanisms, and the interplay of pressures within the respiratory system.
Boyle's law becomes particularly pertinent when examining respiratory...
6.9K
External and Internal Respiration01:24

External and Internal Respiration

6.7K
External respiration occurs in the lungs, and it is the first step in the journey of oxygen inside the body. When we inhale, oxygen enters our lungs and diffuses across the thin alveolar membrane. The alveoli are tiny, air-filled sacs that provide a vast surface area for gas exchange. Oxygen in the alveoli has a higher partial pressure (105 mmHg) than in the adjacent pulmonary capillaries (40 mmHg), establishing a pressure gradient. As a result, oxygen molecules move from the alveoli into the...
6.7K
Breathing01:05

Breathing

63.9K
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...
63.9K
Pressure Relationships in Thoracic Cavity01:24

Pressure Relationships in Thoracic Cavity

5.3K
Breathing, otherwise known as pulmonary ventilation, is the process of air movement into and out of the lungs. The main mechanisms propelling pulmonary ventilation are atmospheric pressure (Patm), intra-pulmonary (Ppul ) or intra-alveolar pressure (Palv) within the alveoli, and intrapleural pressure (Pip) within the pleural cavity.
Breathing Mechanisms
Both intra-alveolar and intrapleural pressures rely on specific lung properties. The ability to breathe—allowing air to enter the lungs...
5.3K
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

2.8K
In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
2.8K

You might also read

Related Articles

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

Sort by
Same author

Investigating the lasting effects of SARS-CoV-2 infection and the lung microbiome: no persistent microbial alterations in recovered COVID-19 patients with persistent radiological or respiratory abnormalities.

Access microbiology·2026
Same author

Establishing the top 10 research priorities for lung volume reduction treatment for people with COPD.

Thorax·2026
Same author

Tool in lesion verification of shape-sensing robotic-assisted bronchoscopy with cone beam CT in sampling peripheral pulmonary nodules.

Thorax·2025
Same author

Impact of continuous bronchoscopy during exercise on ventilatory and cardiopulmonary parameters.

Journal of applied physiology (Bethesda, Md. : 1985)·2025
Same author

Randomized Sham-controlled Trial of Targeted Lung Denervation in Patients with Chronic Obstructive Pulmonary Disease (AIRFLOW-3).

American journal of respiratory and critical care medicine·2025
Same author

Contemporary Concise Review 2024: New Techniques in Interventional Pulmonology.

Respirology (Carlton, Vic.)·2025

Related Experiment Video

Updated: Dec 21, 2025

Measurement of the Pressure-volume Curve in Mouse Lungs
09:49

Measurement of the Pressure-volume Curve in Mouse Lungs

Published on: January 27, 2015

19.2K

Lung Volume Reduction in Pulmonary Emphysema.

Justin L Garner1,2,3, Pallav L Shah1,2,3

  • 1Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom.

Seminars in Respiratory and Critical Care Medicine
|May 21, 2020
PubMed
Summary
This summary is machine-generated.

New lung volume reduction techniques offer less invasive options for severe emphysema patients. Bronchoscopic lung volume reduction, including valves and coils, shows promise for improving quality of life and exercise capacity.

More Related Videos

Videomorphometric Analysis of Hypoxic Pulmonary Vasoconstriction of Intra-pulmonary Arteries Using Murine Precision Cut Lung Slices
13:32

Videomorphometric Analysis of Hypoxic Pulmonary Vasoconstriction of Intra-pulmonary Arteries Using Murine Precision Cut Lung Slices

Published on: January 14, 2014

11.2K
Lung Fixation under Constant Pressure for Evaluation of Emphysema in Mice
05:48

Lung Fixation under Constant Pressure for Evaluation of Emphysema in Mice

Published on: September 26, 2019

9.6K

Related Experiment Videos

Last Updated: Dec 21, 2025

Measurement of the Pressure-volume Curve in Mouse Lungs
09:49

Measurement of the Pressure-volume Curve in Mouse Lungs

Published on: January 27, 2015

19.2K
Videomorphometric Analysis of Hypoxic Pulmonary Vasoconstriction of Intra-pulmonary Arteries Using Murine Precision Cut Lung Slices
13:32

Videomorphometric Analysis of Hypoxic Pulmonary Vasoconstriction of Intra-pulmonary Arteries Using Murine Precision Cut Lung Slices

Published on: January 14, 2014

11.2K
Lung Fixation under Constant Pressure for Evaluation of Emphysema in Mice
05:48

Lung Fixation under Constant Pressure for Evaluation of Emphysema in Mice

Published on: September 26, 2019

9.6K

Area of Science:

  • Pulmonology
  • Thoracic Surgery
  • Medical Devices

Background:

  • Severe emphysema with hyperinflation poses significant treatment challenges.
  • Inhaled therapies have limited efficacy due to respiratory mechanics and gas exchange issues.
  • Lung volume reduction surgery (LVRS) improves outcomes but has high early morbidity.

Purpose of the Study:

  • To review emerging bronchoscopic lung volume reduction technologies.
  • To evaluate the efficacy and safety of novel emphysema treatments.
  • To compare these techniques to traditional LVRS.

Main Methods:

  • Review of clinical data for endobronchial valves and coils.
  • Analysis of segmental delivery methods (vapor, sealant).
  • Assessment of outcomes in selected emphysema patient cohorts.

Main Results:

  • Endobronchial valves show comparable outcomes to LVRS in selected patients.
  • Endobronchial coils are viable for severe hyperinflation with collateral ventilation.
  • Limited data exists for vapor and sealant modalities.

Conclusions:

  • Bronchoscopic lung volume reduction offers a less invasive alternative to LVRS.
  • Endobronchial valves and coils are established options for specific emphysema types.
  • Further research is needed for vapor and sealant technologies.