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Table 2 Angiographic and procedural characteristics of the patients

From: The therapeutic effects of excimer laser coronary atherectomy therapy for in-stent restenosis chronic total occlusions

 

Total

n = 59

ELCA group

n = 21

Non-ELCA group

n = 38

p value

Lesion location

 Left anterior descending (%)

27 (45.8)

14 (66.7)

13 (34.2)

 

 Left circumflex (%)

10 (16.9)

2 (9.5)

8 (21.1)

 

 Right coronary artery (%)

22 (37.3)

5 (23.8)

17 (44.7)

0.056

Multiple vessel disease (%)

55 (93.2)

20 (95.2)

35 (92.1)

1.000

Syntax score

19.4 ± 7.6

21.9 ± 3.3

18.7 ± 8.3

0.141

J-CTO score

1.87 ± 0.81

2.57 ± 0.79

1.67 ± 0.70

0.007

Treatment with DCB (%)

49 (83.1)

16 (76.2)

33 (86.8)

0.306

Treatment with DES (%)

26 (44.1)

13 (61.9)

13 (34.2)

0.040

IVUS

12 (20.3)

5 (23.8)

7 (18.4)

0.739

OCT

1 (1.7)

1 (4.8)

0 (0)

0.356

Before intervention

 Lesion length (mm)

33.5 ± 11.3

36.4 ± 13.2

32.7 ± 10.7

0.363

 Reference lumen diameter (mm)

2.79 ± 0.54

3.08 ± 0.52

2.72 ± 0.52

0.059

After intervention

 Minimum lumen diameter (mm)

1.90 ± 0.63

2.36 ± 0.29

1.78 ± 0.64

 < 0.001

 Percentage diameter stenosis

32.9 ± 17.5

24.5 ± 9.09

35.1 ± 18.6

0.048

Procedure success (%)

44 (75.9)

18 (85.7)

26 (70.3)

0.187

Fluoroscopic time (min)

37.3 ± 20.9

30.4 ± 16.4

39.2 ± 21.7

0.400

Contrast volume (mL)

230.4 ± 58.4

254.2 ± 52.6

223.7 ± 58.8

0.146

  1. Data are presented as n (%) or mean ± standard deviation or the median (interquartile range)
  2. J-CTO score: Japan chronic total occlusion score; DCB: drug-coated balloon; DES: drug-eluting stent; IVUS: intravascular ultrasound; OCT: optical coherence tomography; PCI: percutaneous coronary intervention; MI: myocardial infarction