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Table 1 Perioperative variables according to patient positioning

From: Better operative outcomes achieved with the prone jackknife vs. lithotomy position during abdominoperineal resection in patients with low rectal cancer

Variables

PJ-APR ( n= 74)

LT-APR ( n= 37)

P value

Gender, n (%)

Male

52 (70)

26 (70)

0.591

Female

22 (30)

11 (30)

 

Age, years

 

63.0 ± 10.5 (39–83)

64.0 ± 11.7 (39–84)

0.396

Body mass index, kg/m2, mean (range)

 

23.2 ± 3.3 (16.4–29.4)

22.9 ± 3.2 (16.8–31.2)

0.581

Length of hospital stay, days

 

23 ± 7.4 (11–46)

29 ± 11.7 (17–63)

0.011

Duration of anesthesia, min

 

234 ± 51 (130–385)

291 ± 69 (150–450)

0.022

Operative time, min

 

183 ± 45 (90–320)

234 ± 60 (120–370)

0.016

Operative time, n (%)

≤120

6 (8.1)

1 (2.7)

0.255

>120

68 (91.9)

36 (97.3)

 

Estimated blood loss, mL

 

549 ± 218 (200–1,137)

674 ± 350 (160–1,440)

<0.001

Blood transfusion, n (%)

 

6 (8.1)

14 (37.8)

<0.001

Tumor distance, cm

 

4.0 ± 1.4 (1–10)

3.9 ± 1.1 (2–7)

0.282

Tumor size, cm

 

4.4 ± 1.8 (1.5-12)

4.7 ± 1.3 (2.4–8)

0.221

Macroscopic type of tumor, n (%)

Mushroom

19 (25.7)

6 (16.2)

0.486

Ulcerative

54 (72.9)

30 (81.1)

 

Infiltrative

1 (1.4)

1 (2.7)

 

Pathological type, n (%)

Adenocarcinoma

73 (98.6)

36 (97.3)

0.286

Squamous carcinoma

1 (1.4)

0

 

Rectal carcinoid

0

1 (2.7)

 

Degree of differentiation, n (%)

Good

4 (5.4)

1 (2.7)

0.537

Moderate

49 (66.2)

28 (75.7)

 

Poor

21 (28.4)

8 (21.6)

 

Pathologic T stage, n (%)

T1

0

1 (2.6)

0.468

T2

16 (21.6)

10 (27)

 

T3

54 (73.0)

24 (65)

 

T4

4 (5.4)

2 (5.4)

 

Pathologic N stage, n (%)

N0

36 (48.6)

20 (54.1)

0.269

N1

26 (35.1)

15 (40.5)

 

N2

12 (16.2)

2 (5.4)

 

Time of fluid diet, days

 

4.2 ± 1.2 (2–8)

4.0 ± 0.9 (2–7)

0.055

Time of semi-liquid diet, days

 

7.1 ± 1.9 (4–14)

6.7 ± 3.3 (3–22)

0.386

Pelvic drain time, days

 

10.5 ± 3.1 (5–22)

9.4 ± 3.8 (5–20)

0.338

Postoperative hospitalization, days

 

15.6 ± 5.3 (7–35)

22 ± 10.8 (10–51)

<0.001

Postoperative chemoradiotherapy, n (%)

Yes

35 (47.3)

15 (40.5)

0.319

No

39 (52.7)

22 (59.5)

 
  1. APR abdominoperineal resection, PJ-APR abdominoperineal resection in prone jackknife position, LT-APR abdominoperineal resection in lithotomy position.