Table 2.
Morphology characteristics of vertebrobasilar system in sVAD patients with or without IS
| Parameters | Total (n = 93) | Non-IS (n = 18) | IS (n = 75) | OR (95%CI) | P value |
|---|---|---|---|---|---|
| Centerline length (cm) | |||||
| V1 | 49.09 ± 10.79 | 47.96 ± 7.49 | 49.36 ± 11.47 | 0.14 (-0.37, 0.66) | 0.625 |
| V2 | 67.17 ± 8.32 | 65.28 ± 11.03 | 67.62 ± 7.55 | 0.25 (-0.27, 0.76) | 0.286 |
| V3 | 68.87 ± 13.11 | 70.09 ± 12.29 | 68.58 ± 13.37 | 0.12 (-0.40, 0.63) | 0.663 |
| V4 | 49.80 ± 14.21 | 45.85 ± 10.22 | 50.75 ± 14.91 | 0.38 (-0.13, 0.90) | 0.190 |
| Tortuosity | |||||
| V1 | 0.07 ± 0.09 | 0.11 ± 0.14 | 0.06 ± 0.08 | 0.40 (-0.12, 0.91) | 0.063 |
| V2 | 0.03 ± 0.03 | 0.04 ± 0.03 | 0.03 ± 0.03 | 0.25 (-0.26, 0.77) | 0.305 |
| V3 | 0.57 ± 0.08 | 0.60 ± 0.09 | 0.57 ± 0.08 | 0.33 (-0.18, 0.85) | 0.188 |
| V4 | 0.15 ± 0.13 | 0.15 ± 0.11 | 0.14 ± 0.13 | 0.09 (-0.42, 0.61) | 0.738 |
| Curvature | |||||
| V1 | 0.17 ± 0.08 | 0.15 ± 0.03 | 0.17 ± 0.09 | 0.33 (-0.19, 0.85) | 0.307 |
| V2 | 0.16 ± 0.08 | 0.13 ± 0.06 | 0.16 ± 0.09 | 0.43 (-0.08, 0.95) | 0.146 |
| V3 | 0.18 ± 0.09 | 0.15 ± 0.05 | 0.19 ± 0.10 | 0.47 (-0.05, 0.99) | 0.128 |
| V4 | 0.19 ± 0.14 | 0.14 ± 0.07 | 0.20 ± 0.15 | 0.48 (-0.04, 1.00) | 0.120 |
| Artery cross-sectional area (cm2) | |||||
| V1 | 5.44 ± 3.47 | 5.82 ± 4.06 | 5.35 ± 3.34 | 0.13 (-0.39, 0.64) | 0.602 |
| V2 | 5.81 ± 4.02 | 6.66 ± 6.22 | 5.60 ± 3.31 | 0.21 (-0.30, 0.73) | 0.317 |
| V3 | 5.72 ± 3.53 | 6.33 ± 4.35 | 5.58 ± 3.32 | 0.20 (-0.32, 0.71) | 0.417 |
| V4 | 4.95 ± 3.83 | 4.71 ± 3.30 | 5.00 ± 3.96 | 0.08 (-0.44, 0.59) | 0.775 |
| Artery diameter (cm) | |||||
| V1 | 2.48 ± 0.78 | 2.54 ± 0.92 | 2.46 ± 0.75 | 0.09 (-0.43, 0.60) | 0.729 |
| V2 | 2.57 ± 0.84 | 2.68 ± 1.10 | 2.54 ± 0.77 | 0.15 (-0.37, 0.66) | 0.529 |
| V3 | 2.56 ± 0.77 | 2.69 ± 0.79 | 2.53 ± 0.77 | 0.19 (-0.32, 0.71) | 0.458 |
| V4 | 2.32 ± 0.83 | 2.32 ± 0.71 | 2.32 ± 0.85 | 0.01 (-0.50, 0.52) | 0.972 |
| Ratio of vertebral artery diameters on both sides | |||||
| V1 | 0.84 ± 0.80 | 0.86 ± 0.34 | 0.83 ± 0.88 | 0.04 (-0.48, 0.55) | 0.912 |
| V2 | 0.69 ± 0.54 | 0.69 ± 0.26 | 0.70 ± 0.59 | 0.02 (-0.50, 0.53) | 0.954 |
| V3 | 0.99 ± 0.78 | 1.00 ± 0.48 | 0.99 ± 0.83 | 0.01 (-0.51, 0.52) | 0.98 |
| V4 | 0.86 ± 0.44 | 0.89 ± 0.45 | 0.85 ± 0.45 | 0.10 (-0.41, 0.62) | 0.692 |
| VA-BA angle (°) | 141.31 ± 19.37 | 141.78 ± 12.75 | 141.20 ± 20.71 | 0.03 (-0.48, 0.55) | 0.91 |
| VA ostium angle (°) | 77.69 ± 15.22 | 84.88 ± 15.36 | 75.97 ± 14.77 | 0.59 (0.07, 1.11) | 0.025* |
| VA converge angle (°) | 62.12 ± 18.77 | 57.80 ± 28.42 | 63.16 ± 15.72 | 0.23 (-0.28, 0.75) | 0.279 |
| BA angle (°) | 147.00 ± 15.83 | 143.25 ± 18.19 | 147.93 ± 15.19 | 0.28 (-0.24, 0.80) | 0.264 |
| BA tortuosity | 0.07 ± 0.06 | 0.08 ± 0.07 | 0.07 ± 0.06 | 0.11 (-0.41, 0.62) | 0.673 |
| BA length | 25.03 ± 6.77 | 27.36 ± 7.04 | 24.48 ± 6.63 | 0.42 (-0.10, 0.94) | 0.105 |
| Dissection parameters | |||||
| Length (cm) | 46.68 ± 59.17 | 24.81 ± 15.57 | 51.92 ± 64.44 | 0.58 (0.06, 1.10) | 0.081 |
| Curvature | 0.25 ± 0.15 | 0.20 ± 0.08 | 0.26 ± 0.16 | 0.49 (-0.03, 1.01) | 0.113 |
| Tortuosity | 0.16 ± 0.18 | 0.13 ± 0.14 | 0.17 ± 0.19 | 0.25 (-0.27, 0.76) | 0.391 |
| Sectional area (cm2) | 5.80 ± 7.86 | 6.84 ± 7.99 | 5.55 ± 7.86 | 0.16 (-0.35, 0.68) | 0.534 |
| Diameter (cm) | 2.30 ± 1.35 | 2.53 ± 1.45 | 2.25 ± 1.33 | 0.21 (-0.31, 0.72) | 0.422 |
Values are n (%), mean ± SD, or median (quartiles)
*Statistically significant at P < 0.05
IS ischemic stroke, OR odds ratio, CI confidence intervals, VA vertebral artery, BA basilar artery