Fig. 3.

Mechanisms leading to atelectasis during bronchoscopy and increased airway resistance. A Surface tension caused by water molecules leads to attraction. B Once the airflow is disrupted in atelectatic lung units, turbulent airflow leads to increased airway resistance. C As the bronchi decrease in diameter, there is a substantial increase in airways resistance. D Compliance curve for alveoli. As the lung deflates, resistance increases and gas flow through the airways decreases. Atelectatic lung units have poor compliance and require significant changes in inflation pressure to result in minor changes in volume