Effect of surgical pleth index-guided analgesia versus conventional analgesia techniques on fentanyl consumption under multimodal analgesia in laparoscopic cholecystectomy: a prospective, randomized and controlled study

Table 3 Comparison of haemodynamics in the enrolled patients (N = 62)

	SPI group (N = 31)	Control group (N = 31)	P-value
Preoperation
Baseline MAP (mmHg)	84.9 ± 7.5	85.7 ± 6.5	0.658
Baseline HR (bpm)	73.6 ± 8.0	73.7 ± 6.3	0.931
One minute after intubation
MAP (mmHg)	84.9 ± 12.9	88.0 ± 15.0	0.384
HR (bpm)	74.1 ± 8.3	74.5 ± 10.3	0.872
One minute after incision
MAP (mmHg)	90.2 ± 9.7	91.9 ± 9.9	0.490
HR (bpm)	69.2 ± 9.1	70.4 ± 7.6	0.579
One minute after artificial pneumoperitoneum
MAP (mmHg)	105.8 ± 13.9	106.5 ± 13.0	0.851
HR (bpm)	78.6 ± 9.6	78.6 ± 10.6	0.980
One minute after abdominal venting
MAP (mmHg)	86.9 ± 10.5	88.9 ± 10.2	0.449
HR (bpm)	68.5 ± 9.8	68.4 ± 8.7	0.978
Haemodynamic events
Tachycardia events (N.) (0/1/2/3/4/5) ^a	12/7/2/4/5/1	13/5/1/5/6/1	0.841
Hypertension events (N.) (0/1/2/3/4/5) ^a	8/4/4/8/5/2	10/3/3/7/6/2	0.591

Data are expressed as the frequencies or means ± SDs, as appropriate. Haemodynamic events were defined as an intraoperative increase in HR or MAP greater than 20 % of the baseline value
^a Patients with different times of tachycardia events or hypertension events were counted in both groups

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