Table 2 Abdominal aortic aneurysm (AAA) morphological features.

From: A nomogram risk assessment model to predict the possibility of type II endoleak-related re-intervention after endovascular aneurysm repair (EVAR)

 

T2EL-related re-intervention (n = 42)

non-T2EL (n = 241)

t/χ2/Z

P

Aneurysm neck features

Neck maximum diameter (cm)

2.76 ± 0.35

2.81 ± 0.26

− 0.83

0.408

Aneurysm neck length (cm)

2.02 ± 0.19

2.07 ± 0.27

− 1.29

0.197

Neck angle(α°)

146.75 ± 8.62

145.58 ± 2.05

1.844

0.066

Neck angle(β°)

153.41 ± 8.43

155.99 ± 11.19

− 1.42

0.155

Aneurysm body features

Body maximum diameter (cm)

5.80 ± 1.06

5.78 ± 0.61

0.206

0.837

Aneurysm body volume (ABV), CC

175.1 ± 82.20

175.03 ± 0.49

0.44

0.662

Aneurysm thrombus volume (ATV), CC

72.05 ± 16.05

87.70 ± 9.54

− 6.13

 < 0.001

%VT

41.13 ± 9.21

50.10 ± 5.45

− 6.13

 < 0.001

Tortuosity index (L1/L2)

1.26 ± 0.10

1.25 ± 0.11

2.666

0.461

Common iliac artery aneurysm

None

48.84%

60.74%

1.793

0.181

Unilateral

37.21%

26.45%

2.349

0.125

Bilateral

9.30%

12.81%

0.368

0.544

Branching vessel features

Number of patency lumber arteries

4(4,5)

3(2,4)

7.188

 < 0.001

Patency of inferior mesenteric artery (IMA)

85.70%

76.30%

1.813

0.178

Diameter of IMA (mm)

3.01 ± 0.46

2.63 ± 0.42

4.679

 < 0.001

  1. %VT = ATV/ABV*100%.