Total Lung Capacity
Total Lung Capacity - Related Videos
01:47
Lung Capacity
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2019
The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures. There are four defined lung volume measures: tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume. Tidal volume is the amount of air inhaled and exhaled in a normal breath. Inspiratory...
07:13
Phenotyping Mouse Pulmonary Function In Vivo with the Lung Diffusing Capacity
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Cited by 16 •
2015
We describe a means to quickly and simply measure the lung diffusing capacity in mice and show that it is sufficiently sensitive to phenotype changes in multiple common lung pathologies. This metric thus brings direct translational relevance to the mouse models, since diffusing capacity is also easily measured in humans.
05:35
Lung Instillation and Fixation: Introducing Liquid into the Trachea and Fixing Lungs to Measure the Fixed Lung Volume
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2023
This video describes a simple and reliable method of introducing liquid into the trachea for lung instillation, fixation, and lung volume measurement.
03:20
Large-Scale Production of High-Capacity Adenoviral Vectors
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2026
Source: Ehrke-Schulz, E., et al. Cloning and Large-Scale Production of High-Capacity Adenoviral Vectors Based on the Human Adenovirus Type 5. J. Vis. Exp. (2016)This video demonstrates the large-scale amplification of high-capacity adenoviral vectors in suspension-adapted human embryonic kidney cells expressing Cre recombinase for use in gene delivery applications requiring high-titer, helper-free vector preparations.
02:42
Determination of the Calcium Retention Capacity of Isolated Mitochondria
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2025
This video demonstrates the procedure to assess mitochondrial calcium retention capacity by monitoring real-time changes in fluorescence as mitochondria uptake calcium. This assay is useful for studying mitochondrial function and calcium-related processes, including apoptosis and neurodegenerative diseases.
FAQs
Because total lung capacity is an aggregate, a measured change does not by itself identify which constituent volume changed. Tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume each contribute to the total, so interpretation requires attention to the component volumes and the measurement method. This distinction matters when comparing respiratory function across biological or clinical investigations.
Simple spirometry records air that moves into or out of the lungs, but it cannot capture the air left after forced exhalation. That residual volume is part of the total, so the complete value cannot be derived from spirometric movement alone. Researchers therefore use a method that estimates the remaining volume under defined physical or gas conditions.
These methods differ in what they assess. Body plethysmography estimates lung volume under defined pressure conditions, whereas gas dilution and gas washout estimate it through gas-exchange conditions. The approaches therefore provide alternative ways to account for volume that simple spirometry misses. Method selection determines which physical or gas-based measurement framework supports the estimate.
Total Lung Capacity can support studies of lung development, restrictive and obstructive disorders, chest-wall mechanics, and responses to respiratory interventions. Its value is not limited to a single research question: it provides a common respiratory-function measure for examining how lung volume relates to biological growth, disease-related patterns, mechanical conditions, or intervention outcomes.
Reporting the measurement approach is essential because the estimate depends on the physical or gas conditions used to assess lung volume. Body plethysmography, gas dilution, and gas washout do not frame the measurement in the same way. Including the method helps readers interpret results appropriately and compare respiratory findings across biology or clinical research.
In studies of respiratory interventions, Total Lung Capacity can serve as an outcome for examining changes in overall lung volume. The same measure can also be considered alongside chest-wall mechanics or used to characterize restrictive and obstructive disorders. These applications connect a lung-volume measurement with broader questions about respiratory function, rather than treating it as an isolated number.