Ultrasound-guided paravertebral nerve block anesthesia on the stress response and hemodynamics among lung cancer patients

Table 2 Between-group comparison of the operative time, anesthesia time, intra-operative bleeding volume, and anesthetic drug use

Group	Cases	Operation time (min)	Anesthesia time (min)	Intraoperative blood loss (mL)	Intraoperative remifentanil dosage (mg)	Intraoperative propofol dosage (mg)	Postoperative sufentanil use (μmg)
Observation group	74	175.59 ± 23.39	183.39 ± 21.15	180.40 ± 33.59	1.48 ± 0.43	760.50 ± 92.28	72.50 ± 16.62
Control group	66	176.60 ± 24.45	185.50 ± 24.44	177.80 ± 35.52	2.18 ± 0.50	920.40 ± 91.15	90.40 ± 17.80
t		-0.250	-0.548	0.445	-8.905	-10.294	-6.152
P value		0.803	0.585	0.657	0.000	0.000	0.000