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Table 2 Lesion characteristics and procedural data

From: The outcomes of patients with very small coronary artery disease treated with thin strut cobalt chromium bare metal stents: an observational study

Variable

All patients

Vessel diameters ≤2.50 mm

Vessel diameters >2.5 mm

p value small versus large vessel diameters

Number of lesions

880

247

633

Target vessel

   

<0.001

LAD

290 (33.0 %)

98 (39.7 %)

192 (30.3 %)

 

CX

233 (26.5 %)

92 (37.2 %)

141 (22.3 %)

 

RCA

344 (39.1 %)

55 (22.3 %)

289 (45.7 %)

 

graft

13 (1.5 %)

2 (0.8 %)

11 (1.7 %)

 

Total occlusion

107 (12.2 %)

33 (13.4 %)

74 (11.7 %)

0.496

Chronic total occlusion

22 (2.5 %)

8 (3.2 %)

14 (2.2 %)

0.381

Thrombus burden

116 (13.2 %)

30 (12.1 %)

86 (13.6 %)

0.570

Diffuse vessel disease

442 (50.2 %)

140 (56.7 %)

302 (47.7 %)

0.017

Calcification

297 (33.8 %)

104 (42.1 %)

193 (30.5 %)

0.001

Ostial lesion

47 (5.3 %)

15 (6.1 %)

32 (5.1 %)

0.546

Bifurcation lesion

51 (5.8 %)

12 (4.9 %)

39 (6.2 %)

0.457

Severe tortuosity

104 (11.8 %)

36 (14.6 %)

68 (10.7 %)

0.114

AHA/ACC type B2/C lesion

353 (40.1 %)

104 (42.1 %)

249 (39.3 %)

0.451

Reference diameter (mm)

3.03 ± 0.53

2.05 ± 0.27

3.41 ± 0.55

<0.001

Lesion length

14.7 ± 7.8

14.7 ± 7.3

14.8 ± 8.0

0.950

Degree of stenosis (%)

86.3 ± 10.7

87.0 ± 9.7

86.0 ± 11.0

0.233

Pre-dilatation

396 (45.0 %)

129 (52.2 %)

267 (42.2 %)

0.007

BMSs used

1027

286

741

BMS diameter (mm)

3.02 ± 0.51

2.48 ± 0.25

3.23 ± 0.42

<0.001

BMS length (mm)

16.0 ± 5.9

15.7 ± 5.8

16.1 ± 5.9

0.399

BMS inflation pressure (atm)

15.0 ± 3.1

14.8 ± 3.1

15.1 ± 3.0

0.144

Additional DCB

17 (1.7 %)

3 (1.0 %)

14 (1.9 %)

0.344

Final result  % stenosis

1.7 ± 10.0

1.7 ± 11.0

1.7 ± 9.7

0.430

Overall technical success

1004 (97.8 %)

280 (97.9 %)

724 (97.7 %)

0.849