Individualized PEEP Setting by EIT in Patients With ARDS

Individualized Positive End Expiratory Pressure(PEEP) Setting by EIT in Patients With Acute Respiratory Distress Syndrome(ARDS)

The investigators conducted a pilot study to compare the effect of Positive End Expiratory Pressure(PEEP) setting guide by lung electrical impedance tomography(EIT) and ARDS-net PEEP-FiO2 table on survival in subjects with mild/severe Acute Respiratory Distress Syndrome(ARDS).

Inclusion:

1. acute respiratory distress syndrome with ratio of partial pressure of arterial oxygen over fraction of inspired oxygen (PaO2:FiO2)<300 and PEEP >5cmH2O
2. Body mass index < =40
3. Written inform consent

Exclusion:

1. pregnant，intracranial hypertension
2. left ventricular dysfunction (EF<25% )
3. Patients with end-stage conditions(death expected within 90 days)