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. 2022 Jan 3;12(1):e049275. doi: 10.1136/bmjopen-2021-049275

Table 4.

Bispectral index, heart rate and arterial pressure measurements (change from baseline and from preintubation period)

Group Before induction Before intubation After intubation Difference between before and after intubation Before intubation vs
after intubation
Video vs
No-video group
P value
BIS Video group 94 (8)
(93 to 97) {74}
40 (19)
(37 to 45) {88}
44 (18)
(40 to 47) {102}
2 (15)
(0 to 5) {85}
0.11 0.20
No-video group 96 (6)
(94 to 97) {75}
46 (21)
(42 to 48) {84}
50 (17)
(46 to 53) {89}
5 (17)
(2 to 9) {79}
0.04
HR, beats/min Video group 74 (20)
(71 to 78) {129}
67 (16)
(63 to 70) {130}
79 (27)
(75 to 82) {131}
9 (17)
(7 to 14) {129}
<0.001 0.103
No-video group 72 (22)
(68 to 76) {115}
65 (16)
(61 to 69) {121}
83 (23)
(78 to 86) {121}
13 (19)
(10 to 19) {120}
<0.001
MAP, mm Hg Video group 98 (20)
(93 to 100) {128}
74 (24)
(72 to 81) {125}
82 (28)
(78 to 87) {125}
4 (25)
(0 to 7) {121}
0.007 0.04
No-video group 99 (22)
(97 to 104) {114}
77 (22)
(74 to 84) {118}
87 (41)
(82 to 93) {113}
12 (39)
(5 to 20) {110}
<0.001

Results are presented as median (IQR) (95% CI of the median). Number of available data points is indicated between curly brackets {}.

BIS, Bispectral Index; HR, heart rate (beats per minute); MAP, mean blood pressure (mmHg).