Efficacy of different dose of dexmedetomidine combined with remifentanil in colonoscopy: a randomized controlled trial

Table 2 Hemodynamic and respiratory changes in the three groups

Group	Items (mmHg/bpm)	T₀	T₁	T₂	T₃	T₄	T₅
I	SBP	125 ± 23	111 ± 22^a	114 ± 22 ^a	112 ± 23 ^a	114 ± 22 ^a	116 ± 24 ^a
	DBP	69 ± 11	62 ± 12 ^a	63 ± 12 ^a	63 ± 12 ^a	66 ± 12	69 ± 16
	HR	80 ± 14	74 ± 14 ^a	75 ± 13 ^a	73 ± 12 ^a	74 ± 12 ^a	76 ± 12 ^a
	RR	18 ± 2	16 ± 3 ^a	16 ± 3 ^a	16 ± 4 ^a	16 ± 4 ^a	16 ± 4 ^a
II	SBP	124 ± 20	111 ± 19 ^a	110 ± 19 ^a	112 ± 20 ^a	115 ± 20 ^a	117 ± 22 ^a
	DBP	70 ± 11	64 ± 11 ^a	64 ± 11 ^a	65 ± 12 ^a	68 ± 13	70 ± 14
	HR	73 ± 14	67 ± 12 ^a	69 ± 15 ^a	72 ± 16 ^a	72 ± 16 ^a	73 ± 16 ^a
	RR	18 ± 2	16 ± 3 ^a	15 ± 3 ^a	15 ± 3 ^a	15 ± 2 ^a	15 ± 2 ^a
III	SBP	123 ± 16	117 ± 21 ^a	107 ± 18 ^a	99 ± 18 ^a	105 ± 19 ^a	106 ± 18 ^a
	DBP	72 ± 12	70 ± 14	75 ± 13 ^a	73 ± 12 ^a	74 ± 12 ^a	76 ± 12 ^a
	HR	81 ± 15	72 ± 13 ^a	73 ± 13 ^a	75 ± 13 ^a	74 ± 13 ^a	75 ± 13 ^a
	RR	18 ± 3	16 ± 3 ^a	15 ± 3 ^a	15 ± 3 ^a	15 ± 3 ^a	15 ± 3 ^a

^aP < 0.05 vs. T₀; all P > 0.05 among the three groups for all parameters at all time points. n = 50/group

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