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Pulmonary Alveolar Surface Tension
- Molecular classification
- Physical Property, Biophysical Force
01
Overview
Pulmonary alveolar surface tension is the force exerted by water molecules at the air-liquid interface lining the alveoli in the lungs. It is a critical determinant of lung recoil and alveolar stability. Pulmonary surfactant, secreted by type II alveolar cells, reduces surface tension, preventing alveolar collapse and facilitating efficient gas exchange. Dysregulation of surface tension contributes to respiratory distress syndromes.
02
Mechanism of action
Exogenous surfactant reduces surface tension at the air-liquid interface in the alveoli.
03
Biological functions
Lung mechanicsGas exchangeAlveolar stabilityRegulation of lung compliance
04
Disease associations
Respiratory distress syndrome (RDS)Acute respiratory distress syndrome (ARDS)Atelectasis
05
Safety considerations
Potential for uneven distribution of exogenous surfactantRisk of barotrauma during ventilationAdverse reactions to surfactant components (rare)
06
Interacting drugs
Exogenous Surfactant (e.g., Beractant, Poractant alfa)
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