Ultrasound-guided, direct suprainguinal injection for fascia iliaca block for total hip arthroplasty: A retrospective study

Table 1 Characteristics of the patients

Characteristics	No-block group (n = 15)	Block group (n = 16)	P value
Age (yr)	80.1 ± 4.2	79.6 ± 4.2	0.740
Body mass index (kg/m2)	22.4 ± 2.3	22.2 ± 2.2	0.739
Male/female	10/5	10/6	0.553
ASA II/III	11/4	10/6	0.398
Duration of surgery (min)	60.3 ± 6.9	59.5 ± 8.3	0.747

ASA: American Society of Anesthesiologists.

Table 2 The use of intraoperative and postoperative analgesics

Analgesics	No-block group (n = 15)	Block group (n = 16)	P value
Intraoperative remifentanil dose (μg)	316.0 ± 62.5	103 ± 37.9	< 0.01
Fentanyl given by intravenous titration in the PACU (μg)	22 ± 8.6	1.9 ± 4.0	< 0.01
Fentanyl consumption by PCIA device in 48 h after operation (μg)	406.6 ± 70.9	204.3 ± 43.0	< 0.01

PACU: Post-anesthesia care unit; PCIA: Patient-controlled intravenous analgesia.

Table 3 Postoperative visual analog scale during rest and movement

Postoperative time (d)	VAS during rest			VAS during movement
	No-block group (n = 15)	Block group (n = 16)	P value	No-block group (n = 15)	Block group (n = 16)	P value
1st	3.6 ± 0.5	2.7 ± 0.4	< 0.01	4.9 ± 0.7	3.4 ± 0.5	0.011
2nd	3.4 ± 0.6	3.0 ± 0.6	< 0.01	4.2 ± 0.8	3.4 ± 0.5	0.002

1^st: The first day after operation; 2^nd: The second day after operation; VAS: Visual analog score.

Table 4 Complications and adverse events

Complications and adverse events	No-block group (n = 15)	Block group (n = 16)	P value
Dizziness, n (%)	6 (40)	1 (6.25)	0.037
Postoperative nausea and vomiting, n (%)	3 (20)	1 (6.25)	0.333
Respiratory depression, n (%)	0	0	/
Severe sedation, n (%)	0	0	/