[Retracted] Changes of Entropy Index and Cerebral Oxygen Metabolism in the Maintenance of Remifentanil Anesthesia and Their Predictive Value for Postoperative Hyperalgesia
Table 2
The incidence of postoperative hyperalgesia in different patients was (%).
Factor
Example number ()
Hyperalgesia ()
Age (years)
<16
12
3 (25.00)
4.790
0.091
16~60
179
21 (11.73)
>60
75
16 (21.33)
Sexuality
Man
146
21 (14.38)
0.108
0.742
Woman
120
19 (15.83)
Body mass index (kg/m2)
<24
104
17 (16.35)
0.229
0.632
≥24
162
23 (14.20)
Degree of education
Junior high school and below
101
15 (14.85)
0.006
0.997
High school or technical secondary school
93
14 (15.05)
College degree or above
72
11 (15.28)
A history of smoking
Yes
47
9 (19.15)
0.755
0.385
No
219
31 (14.16)
History of alcohol abuse
Yes
25
4 (16.00)
0.023
0.879
No
241
36 (14.94)
Long sleep disturbance before surgery
Yes
158
30 (18.98)
4.752
0.029
No
108
10 (9.26)
The way of anesthesia maintenance
Thoracic cannula for general anesthesia
128
20 (15.63)
0.196
0.907
Static composite anesthesia
32
4 (12.50)
All by intravenous anesthesia
106
16 (15.09)
ASA classification
I level
129
18 (13.95)
0.404
0.817
II level
116
18 (15.52)
III level
21
4 (19.05)
Operation time (h)
<2
198
24 (12.12)
5.156
0.023
≥2
68
16 (23.53)
Operative site
Body surface
142
22 (15.49)
0.119
0.989
Arms and legs
55
8 (14.55)
Body cavity
44
6 (13.64)
Other
25
4 (16.00)
The dosage of remifentanil (μg/kg)
<30
181
21 (11.60)
5.232
0.022
≥30
85
19 (22.35)
State entropy
Low levels before the induction of anesthesia
130
18 (13.85)
0.283
0.595
High levels before the induction of anesthesia
136
22 (16.18)
Low intraoperative level of 30 min
128
12 (9.38)
6.192
0.013
High intraoperative level of 30 min
138
28 (20.29)
Low levels at the end of the surgery
135
14 (10.37)
4.674
0.031
High level at the end of the surgery
131
26 (19.85)
Reaction entropy
Low levels before the induction of anesthesia
132
17 (12.88)
0.956
0.328
High levels before the induction of anesthesia
134
23 (17.16)
Low intraoperative level of 30 min
133
14 (10.53)
4.237
0.040
High intraoperative level of 30 min
133
26 (19.55)
Low levels at the end of the surgery
135
13 (9.63)
6.275
0.012
High level at the end of the surgery
131
27 (20.61)
Da-jvO2 (ml/l)
Low levels before the induction of anesthesia
134
18 (13.43)
0.544
0.461
High levels before the induction of anesthesia
132
22 (16.67)
Low intraoperative level of 30 min
130
27 (20.77)
6.538
0.011
High intraoperative level of 30 min
136
13 (9.56)
Low levels at the end of the surgery
133
29 (21.80)
9.534
0.002
High level at the end of the surgery
133
11 (8.27)
CERO2 (%)
Low levels before the induction of anesthesia
131
18 (13.74)
0.340
0.560
High levels before the induction of anesthesia
135
22 (16.30)
Low intraoperative level of 30 min
129
11 (8.53)
8.309
0.004
High intraoperative level of 30 min
137
29 (21.17)
Low levels at the end of the surgery
134
14 (10.45)
4.453
0.035
High level at the end of the surgery
132
26 (19.70)
Note: state entropy, reaction entropy, Da-jvO2, and CERO2 are bounded by the mean value, ≤mean value is low level, >mean value is high level; “-” means that there is at least one lattice theoretical number , and there is no value.
