Short-term outcomes of laparoscopic total mesorectal excision compared to open surgery

Table 1 Patients’ clinical-pathological characteristics and comparisons of operative and perioperative data between laparoscopic and open total mesorectal excision

	LTME	OTME	P value
	(n = 67)	(n = 71)
Characteristics
Age (yr)	58.4 ± 13.6	59.6 ± 9.4	0.910
Sex ratio (male:female)	1.3:1	1.29:1	0.918
BMI	23.6 ± 2.6	23.4 ± 1.8	0.886
ASA			0.846
I	57	63
II	9	7
III	1	1
pTNM classification			0.892
I	7	9
II	46	49
III	14	13
Differentiation grades			0.964
Well-moderately differntiated	63	65
Poorly differentiated	4	6
Distal margin (cm)	3.6 ± 1.9	3.3 ± 1.7	0.648
Comparisons
Sphincter-preserving surgery (%)	44 (65.7)	43 (60.6)	0.046
Operating time (min)	216.4 ± 68.3	162.7 ± 42.5	0.032
Blood loss (mL)	86.9 ± 37.6	119.1 ± 32.7	0.018
Postoperative analgesia (d)	2.1 ± 0.6	3.9 ± 1.8	0.008
Duration of urinary drainage (d)	4.7 ± 1.8	6.9 ± 3.4	0.016
Time to pass flatus (h)	46.9 ± 14.8	95.6 ± 54.8	0.004
Postoperative hospital stay (d)	10.4 ± 4.3	13.8 ± 5.9	0.036
Length of specimen (cm)	18.4 ± 4.2	19.7 ± 6.1	0.786
Number of lymph nodes harvested	20.3 ± 8.3	21.1 ± 6.7	0.924
Positive circumferential margin (%)	1.5	2.8	0.068

LTME: Laparoscopic total mesorectal excision; OTME: Open total mesorectal excision; BMI: Body mass index; pTNM: Pathologic tumor-node-metastasis; ASA: American Society of Anesthesiologists.

Table 2 Comparison of complications

Complications	LTME	OTME
Ureter damage	1	0
Anastomotic leak	1	1
Obstruction	1	3
Wound infection	1	2

LTME: Laparoscopic total mesorectal excision; OTME: Open total mesorectal excision.