Ultrasound-guided serratus anterior plane block enhances postoperative analgesia and recovery in thoracoscopic surgery

Table 4 Comparison of perioperative hemodynamic indexes between the two groups (mean ± SD, mmHg), n = 40

Index	Group	T0	T1	T2	T3	T4
SBP	Observation group	93.33 ± 12.23	87.42 ± 9.21a	82.42 ± 8.54a,b	79.32 ± 12.34a,b	88.32 ± 9.32a,b
	Control group	95.43 ± 12.62	88.31 ± 11.02	110.68 ± 12.85a	108.60 ± 9.33a	102.23 ± 12.35a
DBP	Observation group	51.33 ± 9.61	48.33 ± 8.20a	42.29 ± 10.12a,b	43.33 ± 10.63a,b	46.55 ± 10.57a,b
	Control group	52.06 ± 10.23	49.33 ± 11.42	69.31 ± 9.34a	62.22 ± 9.20a	55.33 ± 10.25a

^aP < 0.05 vs T0 in the same group.

^bP < 0.05 vs the control group at the same time.

SBP: Systolic blood pressure; DBP: Diastolic blood pressure.