6-23 
TVe  The expired tidal volume in one cycle. 
TVe/IBW  The expired tidal volume in one cycle per IBW. 
TVe spn  The spontaneous expired tidal volume in one cycle. 
MV  The accumulated expired tidal volume in one minute. 
MVspn  The accumulated spontaneous expired tidal volume in one minute. 
MVleak 
The accumulated leakage (inspiratory volume minus expiratory volume) in one 
minute. 
ftot  The accumulated number of breaths in one minute. 
fmand  The accumulated number of mandatory breaths in one minute. 
fspn  The accumulated number of spontaneous breaths in one minute. 
Ri  The airway resistance during inspiration. 
Re  The airway resistance during expiration. 
Cstat  The static compliance.   
Cdyn The dynamic compliance. 
RSBI  Rapid shallow breath index that is defined as fspn/TVespn. 
WOB Work of breath. 
NIF  Negative inspiratory force. 
P0.1 
The pressure drop in the first 100 ms when the patient starts spontaneous 
breathing. 
PEEPi 
Intrinsic PEEP(The PEEPi value displayed has already included PEEP value and 
is the actual airway pressure). 
Vtrap  The volume of trap gas in the lungs produced by intrinsic PEEP. 
FiO2  The percentage of oxygen in the patient’s inspired gas. 
EtCO2  The concentration of CO2 measured at the end of expiration. 
FiCO2  The minimum CO2 concentration measured during inspiration. 
 
6.11 Enter Standby 
Push the Standby key. Standby screen appears after your confirmation. 
 
6.12 Turn the System off 
Push the    key to turn the system off when in Standby. In non-Standby, push the     
key and the system prompts [Please enter Standby mode to shut down the system.]. Select 
[Ok] to close the dialog. The system is still in non- Standby.