병리학2 Respiratory system: Asthma Asthma: Characterized by periodic episodes of severe but reversible bronchiole obstruction due to hyperresponsive airways. Problem: occurs in upper airway - obstruction to the airflow of decrease alveolar ventilation. 1) Bronchoconstriction 2) Inflammation of bronchiole mucosa - Edema 3) Excess mucous production-clogs airway Two Types: 1. Extrinsic Asthma (inflammatory) Could by hypersensitivity.. 2020. 12. 8. Respiratory System: Atelectasis Atelectasis Collapse or incomplete expansion of a lung or a portion of a lung, leading to decreased gas exchange and hypoxia Can be caused by: airway obstruction compression of the lung â surfactant à difficulty expanding the lung When the alveoli do not have air, they collapse and shrivel up ~ natural recoil of lung tissue Ventilation and perfusion are affected à impaired oxygenation Signs and .. 2020. 12. 3. 이전 1 다음 반응형
