Surgery – Truss – Pad
Patent
1983-06-09
1985-10-08
Cohen, Lee S.
Surgery
Truss
Pad
A61B 504
Patent
active
045453888
ABSTRACT:
Disclosed are a method and an apparatus for monitoring the brain state of a patient during a medical procedure relative to a self-norm established at an earlier time, when the patient is in a state selected for medical relevance to the planned procedure. To establish the pre-procedure self-norm, electrical measurements are taken of brain functions which are selected for medical relevance to the procedure, and are processed to produce, for each brain function of interest, a respective statistically and medically significant mean and variance. During the procedure, the same brain functions are electrically measured at each of a sequence of time intervals selected for medical relevance to the procedure. Each new set of measurements is tested for statistically amd medically significant change from the self-norm and, if a test shows such a change, a tangible indication is produced, showing not only that a change has occurred but also showing the ascribed medical significance of the change itself and the persistence of a change.
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Cohen Lee S.
Gerber Eliot S.
Sykes Angela D.
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