Airway Alveoli Abnormalities
Airway Alveoli Abnormalities - Related Videos
01:26
Alveoli and Alveolar Ducts
0 Views •
2024
The respiratory zone of the human body, which stands in contrast to the conducting zone, comprises the structures that actively participate in the exchange of gases. The initiation of this zone is marked by the terminal bronchioles converging into respiratory bronchioles, the tiniest bronchiole classification. The respiratory bronchioles give way to the alveolar ducts that opens into a congregation of alveoli. Actively involved in gas exchange, alveoli resemble tiny sacs similar to clusters of...
02:23
Abnormal Proliferation
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2021
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
02:23
Abnormal Proliferation
0 Views •
2023
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
09:39
A Microfluidic Model of Biomimetically Breathing Pulmonary Acinar Airways
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Cited by 17 •
2016
Soft-lithography was utilized to produce a representative true-scale model of pulmonary alveolated airways that expand and contract periodically, mimicking physiological breathing motion. This platform recreates respiratory acinar flows on a chip, and is anticipated to facilitate experimental investigation of inhaled aerosol dynamics and deposition in the pulmonary acinus.
10:51
Cardiac Exam III: Abnormal Heart Sounds
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2023
Source: Suneel Dhand, MD, Attending Physician, Internal Medicine, Beth Israel Deaconess Medical Center Having a fundamental understanding of normal heart sounds is the first step toward distinguishing the normal from the abnormal. Murmurs are sounds that represent turbulent and abnormal blood flow across a heart valve. They are caused either by stenosis (valve area too narrow) or regurgitation (backflow of blood across the valve) and are commonly heard as a "swishing" sound during auscultation.
FAQs
Airway narrowing, mucus accumulation, and inflammation primarily interfere with movement of air through the bronchial passages. Reduced airflow can limit ventilation and contribute to obstructive patterns, while the resulting imbalance between ventilation and perfusion can impair effective gas exchange. Evaluating these mechanisms helps clinicians connect airway findings with changes in oxygen uptake and carbon dioxide removal.
When alveolar surface area is lost, less interface remains available for oxygen uptake and carbon dioxide removal. Thickened alveolar walls or fluid inside the sacs creates a greater distance between air and blood, making transfer less effective. These distinct structural changes help explain why alveolar abnormalities can produce respiratory impairment even when the main problem is not airway narrowing.
Airway and alveolar abnormalities can disrupt respiration through different immediate pathways. Bronchial narrowing, mucus, or inflammation mainly affects ventilation, whereas reduced alveolar surface area, thickened walls, or fluid directly affects the air-blood exchange barrier. Both may disturb ventilation-perfusion matching, but distinguishing the dominant site helps clinicians classify the pattern as obstructive, restrictive, or diffuse.
Assessment combines several complementary sources rather than relying on one finding. Symptoms and physical examination provide the clinical context; pulmonary function testing evaluates respiratory performance; imaging helps visualize structural changes; and blood oxygenation measures indicate how effectively oxygenation is being maintained. Together, these results can connect an observed abnormality with its functional effect and support a more specific clinical interpretation.
Pulmonary function testing is useful because it links suspected structural abnormalities with measurable respiratory performance. In the clinical evaluation, its findings contribute to distinguishing obstructive, restrictive, and diffuse lung disorders, especially when interpreted alongside symptoms, examination, imaging, and blood oxygenation. The combined assessment is more informative than treating any single test result as definitive.
Recognizing the affected compartment influences clinical decision-making. Identifying an airway-dominant, alveolar, or more diffuse pattern helps guide treatment and provides a framework for monitoring disease progression. Repeated interpretation of symptoms, testing, imaging, and oxygenation can clarify whether respiratory dysfunction is changing over time and how that change affects ventilation, oxygen uptake, or carbon dioxide removal.