Retrospective Study
Copyright ©The Author(s) 2021.
World J Gastrointest Surg. Dec 27, 2021; 13(12): 1660-1672
Published online Dec 27, 2021. doi: 10.4240/wjgs.v13.i12.1660
Table 1 Baseline clinicopathologic characteristics and surgical outcomes
Variables
Total (n = 1040)
Patient demographics
Age (yr)60.4 ± 12.4
Sex (male/female)611/429
BMI (kg/m2)22.5 ± 3.2
With previous abdominal surgery, no. (%)133 (12.8)
Smoking and drinking history, no. (%)426 (41.0)
Comorbidity, no. (no/one or more)239 (23.0%)
Operative parameters
ASA class, no. (I/II/III)593/518/129
Operation time (min)173.6 ± 51.1
Evaluated blood loss (mL)108.4 ± 87.3
Types of colorectal surgery, no. (right-/left-/transverse-/sigmoid-/LAR/abdominoperineal-/multiple-)235/88/11/234/369/79/24
Types of robotic surgery, no. (totally robotic/robotic-assisted)507/533
No. lymph nodes retrieved17.8 ± 7.5
Multiple organ resection, no. (%)36(3.5)
Operation number, no. (yr)
2015/5-2016/5226 (21.7%)
2016/5-2017/5226 (21.7%)
2017/5-2018/5259 (24.9%)
2018/5-2019/5280 (26.9%)
2019/5-2020/5311 (29.9%)
Pathology results
Neoplasm longest diameter, cm4.5 ± 2.3
Histological type, no. (well or moderately/poorly or undifferentiated)947/93
pT stage, no. (T1/T2/T3/T4)107/126/218/589
pN stage, no. (0/1/2)659/252/129
pTNM stage, no. (I/II/III)197/462/381
With lymph node metastasis, no. (%)381 (36.6)
With lymphovascular invasion, no. (%)423 (40.7)
With positive resection margin, no. (%)8 (0.8)
In-hospital outcomes
Time to 1st bowel movement, h25.4 ± 6.3
Time to 1st first flatus, h58.6 ± 8.9
Time to 1st liquid diet, h71.5 ± 9.3
Overall complications, no. (%)127 (12.2)
Complications, no. (II/III/IV/V)20/82/15/6/4
Severe complication, no. (C-D grade ≥ III, %)25 (2.4)
Local complications, no. (%)91 (8.8)
Systemic complication, no. (%)36 (3.5)
Mortality, no. (%)4 (0.4)
Postoperative hospital stay of all patients (d)7.4 ± 2.3
Postoperative hospital stay of patients without complications (d)6.5 ± 1.1
Postoperative hospital stay of patients with complications (d)14.1 ± 5.2
BMI: Body mass index; ASA: American Society of Anesthesiologists; right-, Right colon resection; left-: Left colon resection; transverse-: Transverse colectomy; sigmoid-: Sigmoid colectomy; LAR: Low anterior resection; abdominoperineal-: Abdominoperineal resection; multiple-: Multiple bowel resection; C-D grade: Clavien-Dindo grade; T: Primary tumor; N: Regional lymph nodes; M: Distant metastasis.