Patient monitor User’s manual
Chapter 17-1
The CSM is intended for use in monitoring the hypnotic state of the brain
by data acquisition of EEG signals of the anaesthetized or sedated patient in
all areas of the hospital. It is a non-invasive measurement tool to be used by a
trained professional to measure the level of consciousness during general
anaesthesia and sedation by use of variations in the frequency content of the
spontaneous EEG. It analyses the frequency shifts that take place in the EEG
signal as the level of consciousness changes. Based on this principle, the
monitor calculates the Cerebral State Index (CSI), which is used to estimate
the level of consciousness of the patient.
The CSM measurement part includes Cerebral state monitor, CSM
connection module, patient cable and sensors. The connection between
Cerebral state monitor and the host monitor is showed as follows:
Cerebral state monitor introduction:
The detailed information about CSM module refers to ‘Cerebral State
Monitor(Model CSM2) User manual’.