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Outpatient Surgery E-Weekly

Contact Congress Over Drug Shortage Issues

A Kentucky congressman is urging surgical facilities to contact their members of Congress and request that they sign his letter demanding changes to...

N.J. Posts ASC Inspection Reports Online

State and federal inspection reports of New Jersey's ASCs are now available online, giving patients an opportunity to make more informed choices abo...

Are Opioids Necessary?

While it's not always practical, or even possible, to eliminate opioids from your post-op pain management regiment, reducing their use in favor of n...

Archive > September, 2002 Vol. III, No. 9

Which Consciousness Monitor is Right For You?

Our panel of anesthesia experts takes you inside the BIS, the PSA and the AEP

For years, anesthesiologists relied on a variety of methods to gauge how patients were reacting to anesthesia, such as measuring heart rate, pulse oximetry and end-tidal CO2. Then researchers discovered that anesthetized patients exhibited changes in the electrical signals emitted by the nerve cells in the brain. As patients lost consciousness and entered a hypnotic state, their EEG waves changed from low-amplitude, high-frequency signals to large-amplitude, low-frequency signals.

Aspect Medical Systems was the first company to capitalize on this finding by developing the Bispectral Index (BIS) monitor, which analyzed the complex EEG data and provided what the company claimed was the first true measure of the depth of anesthesia. Now, two other monitoring devices
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Categories: Anesthesia, Equipping Your OR, Product Reports
Keywords:
EEG; Index; Medical Systems; Systems; analyzed; anesthesiologists; anesthetized; capitalize; cells; changed; claimed; company; complex; consciousness; data; depth; developing; devices; discovered; electrical; emitted; end-tidal; entered; exhibited; finding; gauge; heart; high-frequency; hypnotic; lost; low-frequency; measure; measuring; methods; monitoring; nerve; oximetry; patients; provided; pulse; reacting; relied; researchers; signals; signals.Aspect; true; variety; waves... show all keywords
EEG; Index; Medical Systems; Systems; analyzed; anesthesiologists; anesthetized; capitalize; cells; changed; claimed; company; complex; consciousness; data; depth; developing; devices; discovered; electrical; emitted; end-tidal; entered; exhibited; finding; gauge; heart; high-frequency; hypnotic; lost; low-frequency; measure; measuring; methods; monitoring; nerve; oximetry; patients; provided; pulse; reacting; relied; researchers; signals; signals.Aspect; true; variety; waves

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