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Table 4 Hemodynamic parameter comparisons: PED alone versus PED with coils and PED with coils versus LVIS with coils

From: Hemodynamic analysis for endovascular treatment in small unruptured intracranial aneurysms: a matched comparison study of flow diverter versus LVIS

 

PED alone (n = 34)

PED with coils (n = 17)

P value

PED with coils (n = 17)

LVIS with coils (n = 51)

P value

Velocity on the neck plane

Pre-operation, m/s

0.23 ± 0.13

0.23 ± 0.16

0.542

0.23 ± 0.16

0.26 ± 0.13

0.172

Post-operation, m/s

0.11 ± 0.06

0.11 ± 0.06

0.865

0.11 ± 0.06

0.12 ± 0.10

0.772

Reduction ratio (%)

50.50 ± 17.57

47.03 ± 21.86

0.313

47.03 ± 21.86

55.73 ± 23.28

0.071

Velocity in the aneurysm

Pre-operation, m/s

0.11 ± 0.14

0.07 ± 0.07

0.675

0.07 ± 0.07

0.10 ± 0.09

0.226

Post-operation, m/s

0.04 ± 0.10

0.02 ± 0.02

0.689

0.02 ± 0.02

0.01 ± 0.01

0.069

Reduction ratio (%)

66.75 ± 37.39

78.55 ± 16.81

0.436

78.55 ± 16.81

91.53 ± 8.28

< 0.001*

WSS on the aneurysm

Pre-operation, Pa

3.99 ± 4.39

2.76 ± 2.28

0.617

2.76 ± 2.28

3.56 ± 2.43

0.172

Post-operation, Pa

2.73 ± 6.50

1.50 ± 1.65

0.719

1.50 ± 1.65

0.33 ± 0.47

< 0.001*

Reduction ratio (%)

41.24 ± 50.30

54.17 ± 28.29

0.719

54.17 ± 28.29

91.20 ± 9.82

< 0.001*

  1. WSS wall shear stress