Effects of Dexmedetomidine on motor- and somatosensory-evoked potentials in patients with thoracic spinal cord tumor: a randomized controlled trial

Table 4 MAP, HR, BIS at different time points (mean ± SD)

Variable	Group	T1	P	T2	P	T3	P	T4	P
MAP (mmHg)	Propofol group (n = 25)	86 ± 11		86 ± 15		86 ± 13		84 ± 12
	DP adjusted group (n = 23)	80 ± 11	0.061	93 ± 14**^a	0.037	95 ± 15**^a	0.019	95 ± 12**^a	0.003
	DP unadjusted group (n = 23)	80 ± 10	0.098	94 ± 10**^a	0.032	95 ± 13**^a	0.019	95 ± 11**^a	0.003
HR (bpm)	Propofol group (n = 25)	65 ± 10		60 ± 7		59 ± 6		60 ± 8
	DP adjusted group (n = 23)	64 ± 10	0.541	59 ± 9	0.464	58 ± 9*	0.816	59 ± 8	0.626
	DP unadjusted group (n = 23)	66 ± 8	0.841	59 ± 6**	0.489	59 ± 5**	0.842	60 ± 6*	0.850
BIS	Propofol group (n = 25)	45 ± 3		44 ± 3		44 ± 3		42 ± 8
	DP adjusted group (n = 23)	44 ± 4	0.393	43 ± 3	0.146	43 ± 3	0.428	43 ± 3	0.534
	DP unadjusted group (n = 23)	45 ± 3	0.732	37 ± 6**^a	0.000	35 ± 5**^a	0.000	35 ± 6**^a	0.000

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