Restrictive: interstitial problem (non-bacterial)
- Small stiff lungs (↓VC)
- Trouble breathing IN → FEV1/FVC >0.8
- ABG: ↓pO2 → ↑RR, ↓pCO2, ↑pH
- CXR: reticulo-nodular pattern, ground-glass appearance
- Die of cor pulmonale
- Ex: NM dz (breathing out is passive), drugs, autoimmune dz
- Tx: Pressure support on ventilator, ↑O2, ↑RR, ↑inspiratory time
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