Version 2.78

Part Description

LP187015-5   State entropy
Entropy is a measure of the depth of anesthesia. State entropy uses the irregularity of the EEG signal in the 0.8 to 32 Hz frequency band to measure cerebral cortex activity, and response entropy uses the FEMG signal in the 0.8 to 47 Hz frequency band to measure cerebral cortex and facial muscle activity, respectively. Typical values for patients undergoing general anesthesia are between 40 and 60 for either state or response entropy, and at these levels of entropy, the probability of patient accidental awareness is low.
These are proprietary measurements and the formulas are not available. Source: Regenstrief LOINC

Fully-Specified Name

Component
State entropy
Property
Score
Time
Pt
System
Cerebral cortex
Scale
Qn
Method
EEG

Additional Names

Short Name
State entropy Score Ctx EEG

Basic Attributes

Class
NEURO
Type
Clinical
First Released
Version 2.54
Last Updated
Version 2.69
Order vs. Observation
Both

Formula (Readable)

This is a proprietary measurement and the formula is not available.

Member of these Panels

LOINC Long Common Name
75885-4 IEEE 11073 Rosetta panel

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) Entropía de estado:Puntaje:Punto temporal:Corteza cerebral:Cuantitativo:EEG
it-IT Italian (Italy) Stato entropia:Punteggio:Pt:Coretccia cerebrale:Qn:EEG
Synonyms: Elettroencefalogramma Neurologia Punto nel tempo (episodio)
zh-CN Chinese (China) 状态熵:评分:时间点:大脑皮质:定量型:脑电图
Synonyms: Cereb SE 分值;得分;分数 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 大脑（Cerebral） 大脑皮层 州;邦;政府;国家;状况;情况 时刻;随机;随意;瞬间 术语"cerebral"指的是主要由中枢半球（大脑皮质和基底神经节）组成的那部分脑结构 神经学;神经科;神经内科;神经内;神内;脑神经科 脑动电流图;Electroencephalogram;EEG;脑电波记录

Example Units

Unit Source
{score} Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=75954-8