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Important Information about Using BIS Monitoring
BIS monitoring systems are intended for use under the direct supervision of a licensed
healthcare practitioner or by personnel trained in their proper use. They are intended for use
on adult and pediatric patients within a hospital or medical facility providing patient care to
monitor the state of the brain by data acquisition of EEG signals.
The BIS 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 BIS 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 the BIS in
conjunction with other available clinical signs.
Reliance on the 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.
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 Aspect Representative.
For more information, please contact Aspect Medical Systems at (800) 442-2051. If you
require additional information on the use of BIS, please contact Aspect Medical Systems
Clinical Support at 800-442-8655 or 617-559-7655 if calling from outside of the USA.
