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Ventilation. Hazard Recognition. Ventilation may be deficient in confined spaces, facilities failing to provide adequate maintenance of ventilation equipment, facilities operated to maximize energy conservation, windowless areas, and areas with high occupant densities.
- Introduction
- Transmural Pressures
- Function
- Important Factors
- Pathophysiology
Pulmonary compliance, a measure of the lung expandability, which is important in ideal respiratorysystem function. It refers to the ability of the lungs to stretch and expand. Lung compliance can be calculated by dividing volume by pressure (C = V/P). 1. Two factors affecting lung compliance are elasticity from the elastin inconnective tissue,and s...
The compliance of the lung describes the relationship between the transmural pressure (i.e. pressure passing through a wall/hollow structure) across the lung, compared to the organ's volume. Transmural pressure indicates the relative pressure between the alveoliand the intrapleural space. Positive transmural pressures indicate greater alveolar pres...
Compliance of the respiratory system describes the expandability of the lungs and chest wall. There are two types of compliance: dynamic and static. 1. Dynamic compliance describes the compliance measured during breathing, which involves a combination of lung compliance and airway resistance. This is defined as the change in lung volume by the chan...
As mentioned above, two important factors of lung compliance are elastic fibers and surface tension.More elastic fibers in the tissue lead to ease in expandability and, therefore, compliance. Surface tension within the alveoli is decreased by the production of surfactant, to prevent collapse. Compliance is more easily achieved by decreasing surface...
Changes in lung compliance can indicate issues within the lungs. These generally cause, or are caused by, injuries, illnesses, or impairments. 1. A decreased compliance might show restrictive lung diseases. Restrictive lung disease can result from mechanical issues with peripheral hypoventilation, including poor muscular effort or structural dysfun...
