Monitoring Bispectral Index (BIS™)
Efficia CM Series Rack and Modules Instructions for Use 5-1
5
Monitoring Bispectral Index
(BIS
™
)
The Bispectral Index (BIS) module enables anesthesia professionals to access processed
EEG information as a measure of the effect of certain anesthetics during patient care.
The BIS Index, one of the output parameters, may be used as an aid in monitoring the
effects of certain anesthetic agents; and its usage with certain anesthetic agents may be
associated with a reduction in primary anesthetic use and a reduction in emergence and
recovery time.
Use of the BIS Index for monitoring to help guide anesthetic administration may be
associated with the reduction of incidence of awareness with recall in adults during
general anesthesia and sedation.
BIS is a complex monitoring technology intended for use as an adjunct to clinical
judgment and training. Clinical judgment should always be used when interpreting BIS in
conjunction with other available clinical signs. Reliance on BIS alone for intraoperative
anesthetic management is not recommended. As with any monitored parameter, artifacts
and poor signal quality may lead to inappropriate BIS values. Potential artifacts may be
caused by poor skin contact (high impedance), muscle activity or rigidity, head and body
motion, sustained eye movements, improper sensor placement and unusual or excessive
electrical interference. BIS values should also be interpreted cautiously with certain
anesthetic combinations, such as those relying primarily on either ketamine or nitrous
oxide/narcotics to produce unconsciousness. Due to limited clinical experience in the
following applications, BIS values should be interpreted cautiously in patients with
known neurological disorders and those taking other psychoactive medications.
Note: The BIS education site, www.biseducation.com, offers relevant information and published
articles on the clinical use of BIS. In addition, there is a “Monitoring Consciousness Using the
Bispectral Index during Anesthesia” Clinician's Pocket Guide available on the website and
through your local Covidien Representative. For more information, please contact Covidien at
(800) 442-2051. If you require additional information on the use of BIS, please contact
Covidien at 800-442-8655 or 617-559-7655 if calling from outside of the USA.