Ultrasound-guided ilioinguinal/iliohypogastric nerve block compared to posterior quadratus lumborum block in patients undergoing inguinal hernia repair

Figures & data

Table 1. Basic demographic data, ASA physical status, and block performance data in the two groups.

		PQLB group (n = 38)	IINB group (n = 38)	95% CI	P
Age (years)		37.00 ± 9.878	34.21 ± 8.826	−1.49, 7.07	0.198
Gender	Male	36 (94.7%)	34 (89.5%)	-	0.395
	Female	2 (5.3%)	4 (10.5%)
BMI (kg/m^2)		28.01 ± 5.094	28.66 ± 5.771	−3.14, 1.83	0.601
ASA	I	26 (68.4%)	22 (57.9%)	-	0.342
	II	12 (31.6%)	16 (42.1%)
Duration of surgery (minutes)		59.21 ± 8.969	59.74 ± 9.075	−4.65, 3.60	0.800
Imaging time (seconds)		14.18 ± 3.965	14.45 ± 3.984	−2.08, 1.55	0.774
Needling time (minutes)		3.06 ± 0.791	3.08 ± 0.722	−0.36, 0.33	0.928
Total block performance time (minutes)		3.29 ± 0.797	3.32 ± 0.725	−0.37, 0.32	0.893
Number of needle passes		1.61 ± 0.547	1.61 ± 0.679	−0.28, 0.28	0.999

Data is expressed as mean and standard deviation or as percentage and frequency. P is significant when < 0.05. n=Number of patients, BMI=Body mass index, ASA= American Society of Anesthesiologists.

Table 2. Assessment of hemodynamic changes during the postoperative period in the two groups.

		PQLB group (n = 38)	IINB group (n = 38)	95% CI	P
Heart rate (bpm)	PACU	76.84 ± 11.224	78.13 ± 10.514	−6.26, 3.68	0.607
	2 hours	80.32 ± 11.887	83.21 ± 10.445	−8.01, 2.22	0.263
	6 hours	83.45 ± 11.406	89.84 ± 10.894	−11.49, −1.30	0.015
	12 hours	89.58 ± 12.343	92.00 ± 10.601	−7.68, 2.84	0.362
	18 hours	90.08 ± 12.939	93.95 ± 11.065	−9.37, 1.63	0.165
	24 hours	89.34 ± 13.185	93.05 ± 12.134	−9.50, 2.08	0.206
MAP (mmHg)	PACU	99.68 ± 6.695	101.21 ± 7.462	−4.77, 1.71	0.351
	2 hours	102.08 ± 6.377	104.63 ± 7.567	−5.75, 0.65	0.116
	6 hours	104.26 ± 6.856	109.21 ± 8.224	−8.41, −1.49	0.006
	12 hours	108.50 ± 6.689	110.79 ± 8.511	−5.79, 1.21	0.196
	18 hours	108.79 ± 7.110	112.03 ± 9.140	−6.98, 0.51	0.089
	24 hours	108.34 ± 7.386	111.32 ± 9.068	−6.75, 0.81	0.121

Data is expressed as mean and standard deviation P is significant when < 0.05. n=Number of patients.

Table 3. Postoperative O2 saturation in the two groups.

SpO2%)	PQLB group (n = 38)	IINB group (n = 38)	95% CI	P
PACU	98.58 ± 1.222	98.50 ± 1.133	−0.46, 0.62	0.771
2 hours	98.68 ± 1.093	98.29 ± 1.137	−0.12, 0.90	0.127
6 hours	98.55 ± 1.108	98.13 ± 1.044	−0.07, 0.91	0.092
12 hours	98.32 ± 1.042	98.45 ± 1.108	−0.62, 0.36	0.595
18 hours	98.50 ± 1.157	98.55 ± 1.155	−0.58, 0.48	0.843
24 hours	98.55 ± 1.108	98.61 ± 1.220	−0.59, 0.48	0.844

Data is expressed as mean and standard deviation or as percentage and frequency. P is significant when < 0.05.

Figure 1. Pain score changes in the two study groups.

Table 4. Postoperative pain scores in the study groups.

NRS	PQLB group (n = 38)	IINB group (n = 38)	95% CI	P
PACU	1.0 (0.0, 2.0)	1.0 (0.0, 2.0)	−0.33, 0.12	0.350
2 hours	2.0 (1.0, 3.0)	2.0 (1.0, 4.0)	−0.75, −0.14	0.005
6 hours	2.0 (1.0, 4.0)	3.0 (2.0, 6.0)	−1.51, −0.75	0.000
12 hours	3.0 (2.0, 5.0)	4.0 (2.0, 6.0)	−0.87, −0.03	0.037
18 hours	4.0 (2.0, 5.0)	4.5 (3.0, 6.0)	−1.12, −0.14	0.012
24 hours	3.0 (2.0, 6.0)	4.0 (2.0, 6.0)	−1.13, −0.08	0.025

Data is expressed as a median (range). P is significant when ˂ .05 NRS: Numerical rating scale.

Table 5. Postoperative analgesic profile and opioid-related complications in the study groups.

		PQLB group (n = 38)	IINB group (n = 38)	95% CI/Odds ratio	P
Patients who needed rescue analgesia		24 (63.2%)	24 (63.2%)	1	1
Time to the first analgesic request (hours)		13.25 ± 3.948	8.42 ± 4.680	2.32, 7.35	˂ 0.001
Total dose of pethidine (mg)		49.17 ± 17.673	70.00 ± 18.650	−31, −10	˂ 0.001
Complications	Nausea	4 (10.5%)	14 (36.8%)	4.96	0.007
	Vomiting	1 (2.6%)	6 (15.8%)	6.94	0.047
	Respiratory depression	0 (0.0%)	0 (0.0%)	1	1

Data is expressed as mean and standard deviation or as percentage and frequency. P is significant when < 0.05.

Table 6. Patient satisfaction in the study groups.

		PQLB group (n = 38)	IINB group (n = 38)	P
Patient satisfaction	Poor	0 (0.0%)	2 (5.3%)	0.037
	Fair	0 (0.0%)	4 (10.5%)
	Good	4 (10.5%)	9 (23.7%)
	Very good	13 (34.2%)	10 (26.3%)
	Excellent	21 (55.3%)	13 (34.2%)

Data is as percentage and frequency. P is significant when < 0.05. n=Number of patients.