Obstrucrive Lung Diseases

Obstructive: airway problem (bacterial)

• Big mucus-filled lungs (RV, Reid index = airway thickness/airway lumen)

•Trouble breathing out → FEV1/FVC < 0.8

• ABG: ↑pC02 → ↑RR, ↓pH

• Die of bronchiectasis

Ex: COPD

Tx: Manipulate rate on ventilator  ↑RR ↑expiratory time, ↑O2 only if needed.