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Table 2 Comparison of the two groups' lesion characteristics and surgical data (332 lesions)

From: Clinical research of drug-coated balloon after rotational atherectomy for severe coronary artery calcification

Variable

RA/DCB (n = 58)

RA/DES (n = 274)

χ2/Z

p-value

Approach

  

0.547

0.460

Via radial artery, n (%)

49.00 (84.48)

220 (80.29)

  

Via femoral artery, n (%)

9.00 (15.52)

54 (19.71)

Sheath size, French (F)

  

0.194

0.659

6F, n (%)

28.00 (48.28)

141 (51.46)

  

7F, n (%)

30.00 (51.72)

133 (48.54)

Target-vessel, n (%)

  

24.610

 < 0.001

LM, n (%)

1 (1.72)

67 (24.45)

  

LAD, n (%)

42 (72.41)

152 (55.47)

LCX, n (%)

7 (12.07)

13 (4.74)

RCA, n (%)

8 (13.79)

42 (15.33)

CTO, n (%)

6 (10.34)

25 (9.12)

0.084

0.772

Bifurcation, n (%)

2 (3.45)

51 (18.61)

7.114

0.008

Triple vessel disease, n (%)

20 (34.48)

119 (43.43)

1.575

0.210

IVUS/OCT, n (%)

34 (58.62)

106 (38.69)

7.800

0.005

Temporary peacemaker, n (%)

2 (3.45)

18 (6.57)

0.365

0.546

IABP, n (%)

1 (1.72)

10 (3.65)

0.116

0.733

Number of burrs, n

1.17 ± 0.43

1.29 ± 0.53

1.589

0.112

Largest burr size, mm

1.60 ± 0.19

1.54 ± 0.16

2.502

0.012

Burr/artery ratio

0.61 ± 0.09

0.52 ± 0.06

7.063

 < 0.001

Number of devices, n

1.57 ± 0.65

2.17 ± 0.79

5.406

 < 0.001

Diameter of device, mm

2.68 ± 0.38

2.99 ± 0.34

5.695

 < 0.001

Total length of device, mm

42.60 ± 17.42

52.16 ± 20.76

3.521

 < 0.001

  1. LM, left main artery; LAD, left anterior descending artery; LCX, left circumflex artery; RCA, right coronary artery; CTO, chronic total occlusion; IVUS, intravascular ultrasound; OCT, optical coherence tomography; IABP, intra-aortic balloon pump