Postoperative analgesic effectiveness of ultrasound guided combined femoral - sciatic nerve block versus combined adductor canal block – I PACK block in patients undergoing total knee arthroplasty: A double- blind randomized study

Figures & data

Figure 1. Sonographic view of the femoral and gluteal regions (A) femoral nerve (B) sciatic nerve.

Figure 2. (A) Adductor canal block (B) I pack block.

Figure 3. CONSORT flow diagram illustrating the progress of patients through the study.

Table 1. Patients’ characteristics and times.

		F-S group (n=30)	A-I group (n=30)	p-value
Age (years)		63.80±5.9	64.87±5.1	.453
BMI(kg/m^2)		34.10±2.0	34.48±2.3	.501
ASA	I II III	6 (20%)21(70%)3(10%) 21(70%) 3(10%)	10(33.3%)16(53.3%)4(13.3%) 16(53.3%) 4(13.3%)	0.402
Sex	Male Female	15(50%)15(50%) 15(50%)	13(43.3%)17(56.7%) 17(56.7%)	0.607
Block performance time (min)		1.63±1.4	18.20±3.5	<.001 *
duration of the procedure (min)		13.3±29	128.8±33	.93
Tourniquet time(min)		85±17	84±24	.850

The data showed as mean, standard deviation, proportion, student t-test, x2 chi-square test, F-S (for femoral-sciatic block) and A-I (for Adductor canal block- IPACK) blocks.

P value < 0.05 is significant*.

Figure 4. Box and Whisker comparison for VAS Scale at the rest.

Figure 5. Box and Whisker comparison for VAS Scale during mobility.

Table 2. Total dose of postoperative rescue analgesia, Fentanyl consumption intraoperatively.

	F-S group (n=30) Mean±SD	A-I group (n=30) Mean±SD	p-value total
The total dose of rescue analgesia (mg)	6.57±1.6	8.87±2.3	<.001*
Fentanyl consumption (ug)	142.76±13.15	147.16±1.64	.160

The data presented as mean standard deviation (SD), P value < 0.05 is significant*.

Table 3. Modified Bromage scale data at measured time points.

modified Bromage Scale	F-S group (n=30)		A-I group (n=30)		P-value
	Median	IQR	Median	IQR
modified Bromage 2hr	1	1–1	2	1–2	<0.001*
modified Bromage 4hr	1	1–2	4	4–4	<0.001*
modified Bromage 6	2	1–2	4	4–4	<0.001*
modified Bromage 12	3	2–3	4	4–4	<0.001*
modified Bromage 18	3	3–4	4	4–4	<0.001*
modified Bromage 24	4	4–4	4	4–4	1

Data presented as IQR, range, and median, P value < 0.05 is significant*.

Figure 6. As regard hemodynamic changes; Heart Rate (beats/min).

Figure 7. As regard hemodynamic changes (Mean blood pressure) (mmHg).

Table 4. Complication.

		F-S group (n=30)	A-I group (n=30)	Overall p-value
PONV		6(20%)	3(10%)	0.282
Sedation by Richmond Agitation Sedation scale	−2	2(6.7%)	2(6.7%)	0.826
	−1	10(33.3%)	9(30%)
	0	9(30%)	11(36.7)
	1	9(30%)	7(23.3%)
	2	0(0%)	1(3.3%)

Data expressed as proportion, x2 (Chi-square test).