Electrical Impedance Tomography-Based Prognostic Model for ARDS

Inclusion Criteria: 1. Meet the new 2023 ARDS global definition; 2. Age 18-80 years Exclusion Criteria: 1. Expected death within 24 hours of screening; 2. Metastatic cancer (active malignancy with distant metastases); 3. Severe psychiatric disorders; 4. Pregnancy or postpartum status; 5. Pneumothorax or moderate to large pleural effusion without adequate drainage; 6. Chronic respiratory failure; 7. Patients with pulmonary embolism or pulmonary hypertension; 8. Heart failure patients: EF \<50% or NYHA class III or IV; 9. Patient/family refusal to participate; 10. Participation in another interventional trial within 3 months prior to enrollment