Table 3 Safety and efficiency of four techniques for vascular dissection.

From: Unveiling the beneficial techniques in lung segmentectomy by using a stapler tractor for vascular dissection based on surgical video replay

Variables

Group A

Group B

Group C

Group D

P value

Teaching period

Vessel n = 263

Vessel n = 52

Vessel n = 95

Vessel n = 169

Intraoperative bleeding a (no/yes)

245/18

43/9

82/13

137/32

0.002

Successful traction b (no/yes)

37/226

11/41

25/70

-

0.022

Bronchial Stump length c (no/yes)

206/57

8/44

5/90

46/123

0.000

Learning period

Vessel n = 41

Vessel n = 26

Vessel n = 18

Vessel n = 15

 

Intraoperative bleeding a (no/yes)

39/2

21/5

15/3

10/5

0.037

Successful pass through the target vessel b (no/yes)

5/36

7/19

8/10

-

0.025

Vascular stump length c (no/yes)

32/9

5/21

2/16

5/10

0.000

  1. a Intraoperative bleeding was defined as case which required intervention with gauze compression or silk ligation, cause to prolong operation time; b Successful traction was defined as the first pass through the target vessel, otherwise it was regarded as failure. c Given the height of the foot nails of the high-frequency electrocoagulation hook is equal to half of the width of the stapler, the length of the vascular stump was measured based on whether it exceeds the height of the foot nails of the high-frequency electrocoagulation hook, as a counting data.
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