[Retracted] Changes of Entropy Index and Cerebral Oxygen Metabolism in the Maintenance of Remifentanil Anesthesia and Their Predictive Value for Postoperative Hyperalgesia

Table 1

Comparison of entropy index and cerebral oxygen metabolism before and after anesthesia ().

Time	Entropy index		Cerebral oxygen metabolism
	State entropy	Reaction entropy	Da-jvO2 (ml/l)	CERO2 (%)
Before induction of anesthesia
30 min during operation	^a	^a	^a	^a
At the end of the operation	^ab	^ab	^ab	^ab
	8365.011	7794.024	196.203	428.659
	<0.001	<0.001	<0.001	<0.001

Note: compared with before anesthesia induction, ^a; compared with 30 min during operation, ^b.