Efficacy and safety of propofol target-controlled infusion combined with butorphanol for sedated colonoscopy

Table 3 Comparison of mean arterial pressure and heart rate among the different groups

	Groups	T0	T1	T2	T3
MAP (mmHg)	Group C	90.4 ± 6.1	73.4 ± 6.11	77.0 ± 5.81	88.6 ± 5.4
	Group B1	89.4 ± 5.4	81.7 ± 4.1	85.3 ± 4.0	88.3 ± 3.8
	Group B2	89.5 ± 5.1	78.3 ± 5.02	82.4 ± 4.22	88.5 ± 4.1
HR (bpm)	Group C	81.8 ± 8.8	68.8 ± 7.21	72.1 ± 6.9	79.9 ± 6.0
	Group B1	80.3 ± 9.0	73.2 ± 8.5	74.9 ± 8.0	78.3 ± 6.2
	Group B2	81.9 ± 9.3	74.7 ± 9.8	76.2 ± 8.2	80.1 ± 6.1

¹P < 0.05 vs groups B1 and B2.

²P < 0.05 vs group B1.

T0, prior to anesthesia; T1, immediately after losing consciousness in response to induction of anesthesia; T2, the colonoscope reached the ileocecal; T3, consciousness regained. MAP: Mean arterial pressure; HR: Heart rate; bpm: Beats per minute.