Can an arthritis drug shield the lungs after a brain bleed?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Male or female patients ≥ 18 years old; 2. The diagnosis was non-traumatic intracerebral hemorrhage, subarachnoid hemorrhage (including supratentorial deep hemorrhage, lobal hemorrhage, cerebellar hemorrhage, brainstem hemorrhage, intracerebral hemorrhage, intracerebral parenchymal hemorrhage into ventricle, subarachnoid hemorrhage), which was confirmed by CT scan. 3. Onset of ARDS within 48 hours to 7 days after admission (as defined by Berlin) : ① Patients with moderate to severe ARDS symptoms or progressive dyspnea within 7 days (100mmHg \< PaO2/FiO2≤200, PEEP≥5cmH2O); ② Hypoxemia: SpO2/FiO2≤315mmHg and SpO2≤97%, and could not be explained by acute heart failure and fluid overload; ③ Need intubation or mechanical ventilation; ④ Imaging findings (chest X-ray/chest CT) : infiltration of both lungs, cannot be completely explained by pleural effusion, lobar/whole lung atelectasis and nodule; 4. There was no uncured pneumonia, interstitial lung disease, or chronic respiratory failure before the onset of the disease. 5. Able and willing to sign written informed consent and comply with the requirements of the research protocol. Exclusion Criteria: 1. Patients diagnosed with severe intracerebral hemorrhage requiring surgical intervention with decompressive craniotomy or critically ill, near death; 2. Diagnosis of aneurysm, brain tumor, arteriovenous malformation requires surgery; 3. Recently received live or attenuated vaccine; other JAK inhibitors or other organisms are being used, or enrolled in other clinical trials; 4. Combine the following cases that are not eligible to participate in this study: ① Severe hepatic insufficiency (ALT/AST \> 5xULN); ② Moderate to severe renal insufficiency (eGFR \< 60ml/min/1.73m2); ③ Undergoing hemodialysis or hemofiltration; ④ Neutrophils or lymphocytes decreased (Absolute neutrophil count \< 1000/ul, absolute lymphocyte count \< 200/ul); ⑤ During pregnancy or childbirth; 5. Venous thromboembolism or risk of thrombosis; 6. Life expectancy after enrollment ≤24h.