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Table 1 Patient characteristics and univariable analysis of the risk of postoperative bowel obstruction

From: Risk factors of early postoperative bowel obstruction for patients undergoing selective colorectal surgeries

Variables

No postoperative ileus

Postoperative ileus

χ2/t

P value

N (%)

n = 1284

n = 153

Female

615 (47.90)

69 (45.10)

0.429

0.512

Age

63.92 ± 13.16

66.97 ± 12.02

0.022

0.004

BMI

23.64 ± 3.55

23.09 ± 3.24

0.603

0.051

Right colectomy

436 (33.96)

47 (30.72)

0.642

0.423

Transverse colectomy

60 (4.67)

11 (7.19)

1.844

0.175

Left colectomy

124 (9.66)

18 (11.76)

0.682

0.409

Sigmoid colectomy

450 (35.05)

54 (35.29)

0.004

0.952

Rcctectomy

289 (22.51)

34 (22.22)

0.006

0.936

Malignant

1224 (95.33)

148 (96.73)

0.625

0.429

Hypertension

798 (62.15)

91 (59.48)

0.414

0.520

CHD

168 (13.08)

24 (15.69)

0.800

0.371

Arrhythmia

85 (6.62)

11 (7.19)

0.071

0.790

Cerebral infarction

106 (8.26)

14 (9.15)

0.143

0.705

Encepalorrhagia

8 (0.62)

2 (1.31)

0.201

0.654

Hypothyroidism

23 (1.79)

8 (5.23)

6.111

0.013

Diabetes mellitus

234 (18.22)

31 (20.26)

0.377

0.539

COPD

50 (3.89)

15 (9.80)

11.056

0.001

Renal inadequacy

33 (2.57)

4 (2.61)

0.000

1.000

Hyperlipidemia

258 (20.09)

37 (24.18)

1.401

0.236

Hepatic inadequacy

17 (1.32)

3 (1.96)

0.073

0.787

Blood disease

12 (0.93)

1 (0.65)

0.000

1.000

History of alcohol

169 (13.16)

24 (15.69)

0.749

0.387

History of smocking

218 (16.98)

28 (18.30)

0.169

0.681

Preoperative chemotherapy

52 (4.05)

6 (3.92)

0.006

0.939

Preoperative anemia

565 (44.00)

73 (47.71)

0.762

0.383

Preoperative ileus

249 (19.39)

33 (21.57)

0.421

0.810

ASA I

145 (11.29)

18 (11.76)

7.556

0.047*

ASA II

937 (72.98)

98 (64.05)

  

ASA III

192 (14.95)

35 (22.88)

  

ASA IV

10 (0.78)

2 (1.31)

  

Soapsuds enema for bowel preparation

133 (10.36)

18 (11.76)

0.288

0.592

Oral laxatives for bowel preparation

1178 (91.74)

135 (88.24)

2.135

0.144

Glycerin enema for bowel preparation

212 (16.51)

22 (14.38)

0.456

0.500

Oral antibiotics for bowel preparation

58 (4.51)

4 (2.61)

1.199

0.274

Laparotomy

644 (50.16)

57 (37.25)

9.107

0.003

Curative resection

1126 (87.69)

132 (86.27)

0.253

0.615

Operative time (Min)

208.17 ± 67.78

205.74 ± 68.67

0.133

0.678

Preoperative antibiotics

80 (6.23)

17 (11.11)

5.173

0.023

Preoperative fortified antibiotics

45 (3.50)

12 (7.84)

6.755

0.009

Postoperative fortified antibiotics

536 (41.74)

76 (49.67)

3.515

0.061

Duration of antibiotics (day)

6.68 ± 3.62

11.92 ± 9.10

213.504

0.000

Time to postoperative feeding (day)

5.48 ± 1.75

8.07 ± 4.46

222.496

0.000

Using probiotics

348 (27.10)

54 (35.29)

4.553

0.033

Probiotic indications

505 (39.33)

150 (98.04)

189.965

0.000

Postoperative analgesia

1284

153

0.149

0.930*

None

71 (5.53)

7 (4.58)

  

Opioids

1131 (88.08)

137 (8.95)

  

Opioids and NSAIDs1

69 (5.37)

8 (5.23)

  

NSAIDs

13 (1.01)

1 (0.65)

  

Duration of analgesia

2.77 ± 0.98

2.99 ± 1.49

0.040

0.074

Hypoproteinemia

1067 (89.10)

134 (87.58)

2.001

0.157

Extraction of gastric tube (day)

1.74 ± 1.48

3.04 ± 9.12

86.873

0.085

Extraction of drainage tube (day)

8.77 ± 7.11

11.41 ± 5.24

5.618

0.000

  1. BMI: body-mass index, CHD: coronary heart disease, COPD: chronic obstructive pulmonary disease, ASA: American Society of Anesthesiologists, NSAIDs: non-steroidal anti-inflammatory drugs
  2. *Comparison between two groups, *group and*group…, the difference between groups was statistically significant (P < 0.01 or P < 0.05)