6 Dynamic Airway Compression - Virginia Tech
Describe how pleural and airway pressures interact to cause dynamic airway compression in the healthy lung and how this is exacerbated in disease. Briefly describe how flow-volume loops can help distinguish between obstructive and restrictive lung diseases.
Dynamic compression of the airways - Wikipedia
Dynamic compression of the airways results when intrapleural pressure equals or exceeds alveolar pressure, which causes dynamic collapsing of the lung airways.
6.1: Compression of Airways During Expiration
2024年3月13日 · If airways are already narrowed, as in obstructive lung diseases such as asthma, or parenchymal traction is lost, such as in emphysema, dynamic airway compression occurs to a greater extent.
6: Dynamic Airway Compression - Medicine LibreTexts
2024年3月13日 · Describe how pleural and airway pressures interact to cause dynamic airway compression in the healthy lung and how this is exacerbated in disease. Briefly describe how flow-volume loops can help distinguish between obstructive and restrictive lung diseases.
Excessive Dynamic Airway Collapse: A Standalone Cause of …
2016年7月7日 · This airway compression, known as dynamic airway collapse, ordinarily narrows the lumen of normal central airways by up to 50%. In EDAC, dynamic airway collapse excessively narrows the central airway lumen while the conformation of the …
Excessive Dynamic Airway Collapse: An Unexpected Contributor …
More recently, excessive dynamic airway collapse (EDAC) has been described as a distinct process unrelated to a loss of cartilaginous airway support. EDAC is caused by the posterior wall of the trachea bulging forward and causing airway obstruction during exhalation.
Dynamic Lung Mechanics - Thoracic Key
2019年10月11日 · Objectives 1. Describe how a pressure gradient is created. 2. Define airway resistance and its measurement. 3. Discuss three factors that contribute to or regulate airway resistance in health and disease. 4. Describe the concepts of flow limitation, the equal pressure point, and dynamic airway compression. 5. Define work of breathing and the ...
Airway Dynamics - an overview | ScienceDirect Topics
Airway resistance is determined by lung volume, bronchial smooth muscle tone, and dynamic airway compression. At lower lung volumes, radial traction supporting the bronchi is lost and airway caliber is reduced. Bronchial muscle contraction narrows airways and …
Reply: Excessive Dynamic Airway Collapse: Fact, Fiction, or Flow ...
We agree that excessive dynamic airway collapse (EDAC), as seen on bronchoscopy or dynamic computed tomographic (CT) imaging, occurs at the compressible segment of the central airway downstream from the equal pressure point.
Expiratory muscle dysfunction in critically ill patients: towards ...
The elevated pleural pressure caused by expiratory muscle recruitment might lead to dynamic airway collapse, especially in patients who already have expiratory flow limitation (EFL). This leads to an equal or increased end-expiratory lung volume (EELV).