The Narcotrend Index is derived from a computerized analysis of a patient's EEG. It indicates the hypnotic component of anesthesia and corresponds to the depth of anesthesia achieved. Narcotrend is from MT MonitorTecknik in Bad Bramstedt, Germany.
Narcotrend Index
Narcotrend Stage
95 to 100
A
90 to 94
B0
85 to 89
B1
80 to 84
B2
75 to 79
C0
70 to 74
C1
65 to 69
C2
57 to 64
D0
47 to 56
D1
37 to 46
D2
27 to 36
E0
20 to 26
E1
13 to 19
E2
5 to 12
F0
0 to 4
F1
Narcotrend Stage
Depth of Anesthesia
A
awake
B
sedation
C
light anesthesia
D
general anesthesia (GA)
E
GA with deep hypnosis
F
very deep GA
The EEG activity varies with the various Narcotrend stages.
To read more or access our algorithms and calculators, please log in or register.
