Table 2.
Baseline IVUS Indices
All(n=103) | Non-MB (n=39) | MB (n=64) | p value | |
---|---|---|---|---|
Vessel VI (mm3/mm) | ||||
Entire Vessel | 15.05 ± 3.50 | 15.02 ± 4.01 | 15.07 ± 3.19 | 0.95 |
Proximal Segment | 18.70 ± 4.29 | 17.83 ± 4.54 | 19.23 ± 4.07 | 0.11 |
Middle Segment | 15.26 ± 4.26 | 15.30 ± 4.63 | 15.24 ± 4.06 | 0.95 |
Distal Segment | 11.20 ± 3.43 | 11.94 ± 3.84 | 10.75 ± 3.09 | 0.09 |
Lumen VI (mm3/mm) | ||||
Entire Vessel | 12.35 ± 2.92 | 11.98 ± 3.35 | 12.58 ± 2.63 | 0.32 |
Proximal Segment | 15.26 ± 3.81 | 14.20 ± 3.88 | 15.92 ± 3.63 | 0.03 |
Middle Segment | 12.46 ± 3.49 | 12.11 ± 3.82 | 12.67 ± 3.29 | 0.43 |
Distal Segment | 9.33 ± 2.83 | 9.64 ± 3.19 | 9.15 ± 2.59 | 0.39 |
Intimal VI (mm3/mm) | ||||
Entire Vessel | 2.70 ± 1.38 | 3.04 ± 1.65 | 2.50 ± 1.16 | 0.05 |
Proximal Segment | 3.43 ± 1.76 | 3.64 ± 1.90 | 3.31 ± 1.69 | 0.37 |
Middle Segment | 2.80 ± 1.74 | 3.19 ± 2.02 | 2.57 ± 1.51 | 0.08 |
Distal Segment | 1.86 ± 1.09 | 2.30 ± 1.43 | 1.61 ± 0.72 | 0.0002 |
Values are expressed as mean ± SD.
VI = volume index; MB = myocardial bridging; IVUS = intravascular ultrasound.