ARDS / Shock Lung/ Acute Lung Injury

• Acute Diffuse Alveolar Injury
• Non Cardiogenic Pulmonary Edema

Diagnostic criteria :-
• Acute onset
• PaO2/FiO2 < 200mm of it
• Chest X-ray - B/L pulmonary infiltrate
• PCWP < 18mm hg

Pathophysiology :-
Exudative phase - Damage to capillary endothelium & type 1 and 2 alveolar cells -> Pulmonary edema -> 👇 compliance -> Stiff lung

 C/F :-
• Type 1 Resp failure
• Coarse rales, Diffuse ronchi
• Right to left shunting
• Pulmonary hypertension

Diagnosis :-

B/L diffuse alveolar and reticular opacities


T/t :-
• Airway pressure release ventilation
• +ve end expiratory pressure
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