UAP (n=67)

SAP (n=35)

p-value

Rupture at plaque shoulder

45 (67)

25 (71)

0.660

Location of rupture

 

 

 

 Proximal to the MLA site

33 (49)

20 (57)

0.449

 MLA site

24 (36)

11 (31)

0.657

 Distal to the MLA site

10 (15)

4 (11)

0.626

Distance between rupture site and MLA site, mm

2.64 ± 1.45

2.99 ± 1.70

0.280

Longitudinal morphological features of plaque rupture

 

 

 

 Proximal-type

30 (45)

14 (40)

0.644

 Mid-type

29 (43)

17 (49)

0.610

 Distal-type

8 (12)

4 (11)

0.939

Maximal ruptured cavity area, mm2

1.57 ± 0.54

1.30 ± 0.72

0.032

Lumen area at rupture site, mm2

3.00 ± 0.86

3.45 ± 1.18

0.030

MLA, mm2

2.69 ± 0.80

3.12 ± 1.14

0.029

Lipid-rich plaque

56 (84)

22 (63)

0.019

Thrombus

63 (94)

1 (3)

<0.001


Values are given as n (%) or mean standard deviation. UAP = unstable angina pectoris; SAP = stable angina pectoris; MLA = minimal lumen area
Table 3: Optical coherence tomography findings.