Retrospective Cohort Study
Copyright ©The Author(s) 2024.
World J Gastrointest Surg. May 27, 2024; 16(5): 1271-1279
Published online May 27, 2024. doi: 10.4240/wjgs.v16.i5.1271
Table 1 Baseline data between the two groups of patients

R-TME (n = 45)
L-TME (n = 50)
t/Z/χ2 value
P value
Age [yr, Md (IQR)]68 (64, 71)69 (65, 75)-1.76310.078
Gender, n (%)0.6820.409
Male26 (57.7)33 (66.0)
Female19 (42.3)17 (34.0)
BMI (kg/m2, mean ± SD)23.43 ± 2.5223.85 ± 3.02-0.7330.467
Tumor level from anal verge (cm), n (%)0.81820.664
    5-1025 (55.6)24 (48.0)
    11-1514 (31.1)20 (40.0)
    > 156 (13.3)6 (12.0)
History of cardiopulmonary disease, n (%)0.06820.794
    Yes21 (46.7)22 (44.0)
    No24 (53.3)28 (56.0)
HGB (g/L, mean ± SD)125.22 ± 12.31127.22 ± 17.86-0.62830.532
ALB (g/L, mean ± SD)39.82 ± 2.7739.19 ± 3.181.0230.31
History of abdominal surgery, n (%)3.21420.073
    Yes9 (20.0)17 (34.0)
    No36 (80.0)33 (66.0)
History of neoadjuvant therapy, n (%)0.25320.615
    Yes7 (15.6)6 (12.0)
    No38 (84.4)44 (88.0)
    ASA level, n (%)1.13320.287
    II30 (66.7)28 (56.0)
    III15 (33.3)22 (44.0)
Table 2 Perioperative and pathological data between the two groups of patients

R-TME (n = 45)
L-TME (n = 50)
t/Z/χ2 value
P value
Operation time [min, Md (IQR)]145 (125, 187.5)180 (148.75, 206.25)-2.80510.005
Intraoperative bleeding [mL, Md (IQR)]80 (40, 100)100 (30, 162.5)-0.9810.327
Conversion to laparotomy, n (%)00--
Transfusion, n (%)0 (0)1 (2)-1.0
Ostomy, n (%)16 (35.56)26 (52.0)2.80620.246
No2924
Ileostomy1221
Colostomy45
Positive rate of cutting edge, n (%)00--
Number of lymph node dissection [n, Md (IQR)]16 (12, 20)15 (12, 17)1.09310.278
Postoperative hospitalization days [d, Md (IQR)]8 (7, 9)7 (7, 10)-0.56610.571
Time of first liquid feeding [d, Md (IQR)]3 (3, 4)4 (3, 5)-1.97710.048
Drainage tube removal time [d, Md (IQR)]6 (6, 7)6 (5, 7)-0.1710.865
Foley catheter removal time [d, Md (IQR)]3 (3, 4.5)4 (3, 5)-1.66710.096
Expenditure [RMB, Md (IQR)]77528.84 (67871.24, 92400.57)61756.95 (54587.1, 71251.51)-5.2311< 0.005
Table 3 Postoperative complications, n (%)
Intraoperative complication
R-TME (n = 45)
L-TME (n = 50)
P value
Ureteral injury00-
Acute cardiovascular disease00-
Postoperative complication4 (8.89)6 (12.0)0.874
Postoperative complication00-
Significant blood loss00-
Ileus2 (4.44)4 (8.0)0.773
Abdominal infection1 (2.22)2 (4.0)1
Pneumonia01 (2.0)1
Acute cerebral infarction00-
Urinary retention1 (2.22)1 (2.0)1
Acute cardiovascular disease00-
Acute respiratory failure00-
Ureteral fistula00-
Chylous fistula00-
Complication Clavien-Dindo0.644
II4 (4.44)5 (10.0)0.854
III01 (2.0)0.343
IV00-
V00-
Table 4 Univariate and multifactorial analysis of postoperative complications
Factors
Single factor analysis
Multiple factor analysis
OR
95%CI
P Value
OR
95%CI
P Value
Age1.0540.961-1.1570.263
Gender0.3750.075-1.8740.232
Tumor level from anal verge0.260.06-1.1210.071
History of cardiopulmonary disease2.0740.502-8.5630.313
BMI1.1230.893-1.4130.321
History of abdominal surgery0.6740.133-3.4110.633
HGB1.0280.985-1.0740.2
ALB0.9740.78-1.2170.818
History of neoadjuvant therapy000.999
Operation time1.0161.004-1.0280.0091.0070.989-1.0250.461
Surgical path0.7150.188-2.7180.623
Intraoperative bleeding1.0091.002-1.0150.0061.0080.999-1.0180.075
Ostomy2.2790.915-5.680.077