Retrospective Study
Copyright ©The Author(s) 2019.
World J Gastroenterol. Oct 14, 2019; 25(38): 5838-5849
Published online Oct 14, 2019. doi: 10.3748/wjg.v25.i38.5838
Table 1 Patient, operation, tumor, and postoperative characteristics
CharacteristicCategoryn = 162Percentage (%)
SexFemale3823.46
Male12476.54
Age(yr)Range 30-89
Mean 59.5, median 59.0
BMI (kg/m2)Range 22.30-26.80
Mean 24.66, median 24.95
Previous abdominal surgeryNo13180.86
Yes3119.14
Operation methodOpen surgery6338.89
Laparoscopic surgery9961.11
Operation time (min)Range 120-433
Mean 236.4, median 230.0
Intraoperative blood loss (mL)Range 10-1800
Mean 229.4, median 200.0
Blood transfusionNo13180.86
Yes3119.14
Surgical procedureProximal gastrectomy2112.96
Distal gastrectomy5634.57
Total gastrectomy8552.47
Lymph node dissectionD1+4024.69
D212275.31
Tumor stageI3924.07
II5030.86
III7244.44
IV10.62
Postoperative body temperature (°C)Range 36.4-39.1
Mean 37.6, median 37.5
Postoperative WBC count (×109/L)Range 5.43-22.02
Mean 12.76, median 12.70
Postoperative albumin (g/L)Range 25.5-40.3
Mean 31.93, median 31.80
Postoperative K+ (mmol/L)Range 2.67-5.15
Mean 3.75, median 3.74
Postoperative opioid analgesicNo10061.73
Yes6238.27
PPOINo13080.25
Yes3219.75
Table 2 Association of prolonged postoperative ileus with background, operative, and postoperative variables in bivariate analysis and in multivariable models
VariableCategoryNumber (%) with PPOIUnivariate OR(95%CI)P valueMultivariable OR (95%CI)P value
SexFemale9/38 (23.7)1.36 (0.57, 3.27)0.487
Male23/124 (18.5)Ref.
Age (yr)Continuous variable1.05 (1.01, 1.09)0.009
≤ 6012/88 (13.6)0.43 (0.19, 0.95)0.033Ref.0.030
> 6020/74 (27.0)Ref.2.70 (1.10, 6.66)
BMI (kg/m2)Continuous variable0.91 (0.81, 1.02)0.110
≤ 24.6617/78 (21.8)1.02 (0.42, 2.49)0.529
> 24.6615/84 (17.9)Ref.
Previous abdominal surgeryNo27/131 (15.1)1.35 (0.47, 3.85)0.573
Yes5/31 (16.1)Ref.
Operation methodOpen surgery18/63 (20.6)2.44 (1.11, 5.26)0.0253.45 (1.33, 9.09)
Laparoscopic surgery14/99 (14.1)Ref.Ref.0.010
Operation time (min)Continuous variable0.99 (0.99, 1.00)0.532
≤ 236.416/89 (18.0)0.78 (0.36, 1.69)0.531
> 236.416/73 (21.9)Ref.
Intraoperative blood loss (mL)Continuous variable1.00 (0.99, 1.00)0.693
≤ 229.416/87 (18.4)1.02 (0.42, 2.49)0.639
> 229.48/75 (21.3)Ref.
Blood transfusionNo23/131 (17.6)0.52 (0.21, 1.28)0.149
Yes9/31 (29.0)Ref.
Surgical procedureTotal gastrectomy21/85 (24.7)Ref.
Proximal gastrectomy3/21(14.3)0.51 (0.14, 1.89)0.314
Distal gastrectomy8/56 (14.3)0.51 (0.21, 1.25)0.138
lymph node dissectionD1+5/40 (12.5)Ref.
D227122 (22.1)1.99 (0.71, 5.59)0.191
Tumor stageI-II12/89 (13.5)0.41 (0.19, 0.92)0.027Ref.0.010
III-IV20/73 (27.4)Ref.3.23 (1.32, 7.90)
Postoperative body temperature (°C)Continuous variable0.99 (0.47, 2.05)0.969
≤ 37.619/97 (19.6)0.97 (0.44, 2.14)0.948
> 37.613/65 (20.0)Ref.
Postoperative WBC count (×109/L)Continuous variable1.04 (0.92, 1.17)0.572
≤ 12.7618/82 (22.0)1.33 (0.61, 2.89)0.477
> 12.7614/80 (17.5)Ref.
Postoperative albumin (g/L)Continuous variable0.83 (0.72, 0.95)0.007
≤ 31.9321/86 (24.4)1.91 (0.85, 4.28)0.113
> 31.9311/76 (14.5)Ref.
Postoperative K+ (mmol/L)Continuous variable0.26 (0.08, 0.81)0.020
≤ 3.7520/85 (23.5)1.67 (0.75, 3.69)0.205
> 3.7512/77 (16.0)Ref.
Postoperative opioid analgesicNo12/100 (12.0)0.29 (0.13, 0.64)0.002Ref.< 0.001
Yes20/62 (32.3)Ref.5.84 (2.25, 15.16)
Postoperative opioid analgesicNo12/100 (12.0)0.0020.29 (0.13, 0.64)