Charm Engineering Co. Ltd CAI001-BT33 Manuel D’Utilisation
CORITICAL ACTIVITY INDEX
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Chapter 1 Safety Precautions
Important information for using CAI
CAI should be used only in conditions where managed and supervised by qualified medical
professionals and persons who completed training to use medical devices.
All indicators related to this system were designed to be used for adult and child patients. Also,
this system was designed to monitor brain state of patients by obtaining brainwave data (EEG)
from patients hospitalized in a hospital or an equivalent institute which can provide patient
management equivalent to the hospital.
CAI index is one of indicators in this CAI device, which can be used as a reference to monitor
effectiveness of certain anesthetic agent. Furthermore, as certain anesthetic drug is used along
with CAI device, reduction of main anesthetic drug amount can be expected as well as
reduction of emergency situations and recovery time.
For adult patients, administration of anesthetic drug assisted by CAI index can decrease
occurrence of arousal during general anesthesia or restoration from sedation.
CAI, which is a device utilizing complex monitoring technologies, must be used with clinical
judgment based on skilled experiences.
In the situation of clinical judgment, interpretation of CAI must be performed along with other
possible clinical indications. It is not recommended to manage administration of anesthetic
agent during surgery on the basis of CAI information only. Poor signal or artifacts of various
indexes used in the CAI monitoring may induce inaccurate CAI values. Potential artifact may be
developed by improper skin contact (high impedance), muscular activation or stiffness, head
and body movement, continued ocular movement, inaccurate sensor attachment site, and
unusual or excessive electrical interferences.
CAI values should be interpreted with special care in combined use of certain anesthetic drugs.
For example when Ketamine or Nitrous oxide/narcotics were used as main anesthetic drugs,
special care is required for interpretation of CAI values.
For patients with any known neurological disorder or taking psychiatric drugs, special care
should be taken for CAI values interpretation due to limited clinical experiences on the above
application.
professionals and persons who completed training to use medical devices.
All indicators related to this system were designed to be used for adult and child patients. Also,
this system was designed to monitor brain state of patients by obtaining brainwave data (EEG)
from patients hospitalized in a hospital or an equivalent institute which can provide patient
management equivalent to the hospital.
CAI index is one of indicators in this CAI device, which can be used as a reference to monitor
effectiveness of certain anesthetic agent. Furthermore, as certain anesthetic drug is used along
with CAI device, reduction of main anesthetic drug amount can be expected as well as
reduction of emergency situations and recovery time.
For adult patients, administration of anesthetic drug assisted by CAI index can decrease
occurrence of arousal during general anesthesia or restoration from sedation.
CAI, which is a device utilizing complex monitoring technologies, must be used with clinical
judgment based on skilled experiences.
In the situation of clinical judgment, interpretation of CAI must be performed along with other
possible clinical indications. It is not recommended to manage administration of anesthetic
agent during surgery on the basis of CAI information only. Poor signal or artifacts of various
indexes used in the CAI monitoring may induce inaccurate CAI values. Potential artifact may be
developed by improper skin contact (high impedance), muscular activation or stiffness, head
and body movement, continued ocular movement, inaccurate sensor attachment site, and
unusual or excessive electrical interferences.
CAI values should be interpreted with special care in combined use of certain anesthetic drugs.
For example when Ketamine or Nitrous oxide/narcotics were used as main anesthetic drugs,
special care is required for interpretation of CAI values.
For patients with any known neurological disorder or taking psychiatric drugs, special care
should be taken for CAI values interpretation due to limited clinical experiences on the above
application.