Postoperative analgesia of ultrasound guided rectus sheath catheters versus continuous wound catheters for colorectal surgery: A randomized clinical trial

Peer review under responsibility of Egyptian Society of Anesthesiologists.

IRB: The Research Ethics Committee of the Faculty of Medicine, Tanta, Egypt, approval code: 2474/03/14.

Figures & data

igure 1 Participant flow diagram.

igure 2a Rectus muscle and posterior rectus sheath.

igure 2b Tip of the needle between rectus muscle and posterior rectus sheath.

igure 2c Distribution of LA between rectus muscle and posterior rectus sheath.

igure 2d The catheter in the space between the rectus muscle and posterior sheath.

able 1 Demographic data and patient characteristics in two studied groups.

		Group I (CWCs) n = 30	Group II (RSCs) n = 30	P value
Age (years)		51.77 ± 7.42	50.87 ± 7.62	0.645
Weight (kg)		78.70 ± 8.52	78.20 ± 8.37	0.819
Sex (male: female)		17:13 56.7%: 43.3%	20:10 66.7%: 33.3%
ASA	I	19 (63.3%)	21 (70.0%)
ASA	II	11 (36.7%)	9 (30.0%)
Duration of surgery (h)		2.65 ± 0.440	2.61 ± 0.478	0.780

Data of age, weight, and duration of surgery are expressed as mean ± SD.

Sex and ASA are expressed as number (%).

Significant at p < 0.05.

able 2 Heart rate in the studied groups.

	Time 0	6 h	12 h	24 h	36 h	48 h
Group I n = 30	75.2 ± 4.25^∗	77.57 ± 5.21^∗	79.57 ± 7.19^∗•	80.17 ± 8.84^∗•	76.73 ± 4.11^∗	74.03 ± 3.67^∗
Group II n = 30	71.37 ± 4.9	70.87 ± 5.23	71.0 ± 7.17	70.87 ± 7.75	69.47 ± 5.59	68.37 ± 5.3
p-value	0.002	0.001	0.001	0.001	0.001	0.001

Data are expressed as mean ± SD.

^∗ Significant at p < 0.05.

^∗ Significant difference between groups.

^• Significant difference within the same group.

able 3 Mean arterial blood pressure in the studied groups.

	Time 0	6 h	12 h	24 h	36 h	48 h
Group I n = 30	76.13 ± 4.1^∗	78.70 ± 6.57^∗	81.47 ± 9.23^∗•	81.67 ± 10.49^∗•	77.60 ± 4.61^∗	74.93 ± 3.49^∗
Group II n = 30	70.9 ± 4.61	70.37 ± 5.26	70.60 ± 8.22	69.97 ± 7.96	68.93 ± 5.65	68.07 ± 5.42
p-value	0.001	0.001	0.001	0.001	0.001	0.001

Data are expressed as mean ± SD

^∗ Significant at p < 0.05

^∗Significant difference between groups.

^• Significant difference within the same group.

igure 3 Visual analogue score (VAS) at rest in bed in the two studied groups. Data expressed as mean. Significant at p < 0.05.

igure 4 Visual analogue score (VAS) at movement in bed in the two studied groups. Data expressed as mean. Significant at p < 0.05.

igure 5 Morphine consumption in the two studied groups.

able 4 Patient satisfaction in the two studied groups.

		Group I (CWCs) (n = 30)	Group II (RSCs) (n = 30)
Range		1–4	1–4
Median		3.00	4.00
Mann–Whitney U Test P-Value		0.005^⁎
Extremely satisfied (4)	N (%)	8 (26.7%)	19 (63.3%)
Satisfied (3)	N (%)	15 (50%)	9 (30%)
Unsatisfied (2)	N (%)	4 (13.3%)	2 (6.7%)
Extremely unsatisfied (1)	N (%)	3 (10%)	0 (0%)

#x204E; Statistical significance (P < 0.05).