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Table 3 Clinical and angiographic predictors of first-choice guidewire and it’s crossability through the CTO segment

From: Rational guidewire use in the coronary chronic total occlusion interventions

Variables

Same initial-final guidewire (+)

Same initial-final guidewire (−)

p

Age (years)

63.41 ± 10.9

61.74 ± 10.2

0.30

Sex

  

0.07

 Male

71.8% (56)

84.8% (84)

 

 Female

26.9% (21)

15.2% (15)

 

BMI (mg/dl)

27.9 ± 4.65

28.5 ± 4.23

0.42

Initial creatinine (mg/dl)

0.96 ± 0.30

1.04 ± 0.36

0.12

GFR (ml/minutes)

64.2 ± 22.6

68.7 ± 21.3

0.76

LV EF

  

0.07

> 50%

73.1% (57)

61.6% (61)

 

 35–50%

20.5% (16)

35.4% (35)

 

< 35%

6.4% (5)

3.0% (3)

 

 Hypokinesia in cto territory

41% (32)

57.6% (57)

0.09

Procedural technique

  

< 0.01

 Single-wire cross

88.5% (69)

38.4% (38)

 

 Parallel wire cross

1.3% (1)

10.1% (10)

 

 Step up—step down

5.1% (4)

37.4% (37)

 

 Dissection and re-entry

5.1% (4)

11.1% (11)

 

 Reversed cart

0% (0)

3% (3)

 

Radial access

55.1% (43)

61.6% (61)

0.38

Kontralateral contrast injection

48.7% (38)

56.6% (56)

0.29

J-CTO Score

0.83 ± 0,88

1.89 ± 1.13

< 0.01

 0

42.3% (33)

13.1% (13)

 

 1

37.2% (29)

21.2% (21)

 

 2

16.7% (13)

36.4% (36)

 

 3

2.6% (2)

22.2% (22)

 

 4

1.3% (1)

6.1% (6)

 

 5

0% (0)

1% (1)

 

EuroCTO score

0.93 ± 0.90

1.84 ± 1.23

< 0.01

Target vessel

  

0.89

 LAD

34.6% (27)

31.3% (31)

 

 LCX

19.2% (15)

20.2% (20)

 

 RCA

46.2% (36)

48.5% (48)

 

CTO segment

  

0.50

 Ostial

5.1% (4)

8.1% (8)

 

 Proximal

33.3% (26)

39.4% (39)

 

 Mid

52.6% (41)

41.4% (41)

 

 Distal

9% (7)

11.1% (11)

 

Guidewire number

2.85 ± 1.31

5.48 ± 2.43

< 0.01

Ballon number

2.85 ± 1.44

3.20 ± 1.88

0.18

Stent number

1.58 ± 0.70

1.91 ± 0.91

0.01

Stent length (mm)

50.6 ± 21.8

65.7 ± 33.0

0.001

Fluoroscopy duration

22.2 ± 13.1

45.6 ± 24.4

< 0.01

Contrast amount (ml)

242 ± 114

362 ± 173

< 0.01

 Total

44.1% (78)

55.9% (99)

 
  1. BMI body mass index, GFR glomerular filtration rate, LV EF left ventricular ejection fraction, J-CTO Japan registry of chronic total occlusion, LAD left anterior descending artery, LCX left circumflex artery, RCA right coronary arterY, CTO chronic total occlusion
  2. P < 0.05 is indicated as significant