Anesthesia Clinical Trial
Official title:
Bispectral Index (BIS) Values Required for an Adequate Depth of Anesthesia in Elderly Patients Using Propofol, According to the Characteristic Electroencephalographic Pattern
A correlation between the bispectral index values and electroencephalographic patterns at the
loss of consciousness (LOC) when using propofol in elderly patients, has not been determined.
Our aim is to describe the BIS values and the power of the alpha band in the
electroencephalography in elderly patients, at the LOC moment.
Propofol is an anesthetic drug regularly used in elderly patients requiring anesthesia. The
electroencephalographic pattern recognized when propofol is administered, is different to the
pattern obtained in younger patients. Both groups presents an alpha and slow bands, but they
differ in the intensity of the signal. Younger patients presents more intense
electroencephalographic bands than older patients.
Bispectral index (BIS) is a clinical indicator used to evaluate the depth of anesthesia. A
correlation between this indicator and the power of electroencephalographic bands has not
been determined.
We will describe the LOC moment of elderly patients receiving propofol as anesthetic for
general surgery, with the EEG characteristic bands and the BIS value obtained at that moment.
The BIS values related to the EEG characteristic bands can be described, to correlate the
actual indicators of depth of anesthesia with new parameters.
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