To investigate global and regional changes in lung ventilation and perfusion induced by prone position in ARDS patients assessed by 3D-EIT. And to investigate the difference between 2D-EIT and 3D-EIT in prone position monitoring.
Study Type
OBSERVATIONAL
Enrollment
30
Patients were ventilated based on the ARDS-Net recommendations . Patients were kept in a supine position. The process of lung ventilation and perfusion assessment was as follows: 1. PEEP was determined by the attending doctor and was kept the same during the supine and prone period. 2. 3D-EIT was used to monitor the ventilation and perfusion of ARDS patients at three timepoints: T1: supine position, T2: prone position at 30min, T3: prone position over 10 hours.
Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences
Beijing, Beijing Municipality, China
RECRUITINGRegional ventilation monitored by EIT
Using EIT to monitor the regional ventilation during supine and prone position, to monitor the ventilation distribution change.
Time frame: 5-10minutes
Regional perfusion monitored by EIT
Using EIT to monitor the regional perfusion during supine and prone position, to monitor the ventilation distribution change.
Time frame: 5-10minutes
V/Q monitored by EIT
Ventilation and perfusion monitored by EIT in supine and prone position. To evaluate the V/Q match, deadspace and shunt lung region.
Time frame: 5-10minutes
Respiratory system compliance
Monitor the respiratory system compliance during supine and prone position
Time frame: 1 day
SpO2
Monitor the SpO2 during supine and prone position
Time frame: 1 day
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