Table 1 Baseline characteristics by groups
Elongated stents | Shortened stents | Unchanged stents | p value | ||
|---|---|---|---|---|---|
(n = 69, 67.6%) | (n = 16, 15.7%) | (n = 17, 16.7%) | |||
Age, years | 65.6 ± 10.0 | 67.6 ± 10 | 64.8 ± 11.6 | 0.72 | |
Males | 57 (82.6%) | 14 (87.5%) | 15 (88.2%) | 0.92 | |
Smoking | 30 (43.5%) | 12 (75%) | 12 (70.6%) | 0.043 | |
Hypertension | 42 (60.9%) | 12 (75%) | 10 (58.8%) | 0.77 | |
DM | 22 (31.9%) | 8 (50%) | 4 (23.5%) | 0.37 | |
Dyslipidemia | 45 (65.2%) | 11 (68.8%) | 10 (58.8%) | 0.8 | |
Family history | 7 (10.1%) | 4 (25%) | 3 (17.6%) | 0.28 | |
Clinical presentation | 0.27 | ||||
AP | 29 (42%) | 7 (43.8%) | 6 (35.3%) | ||
UAP | 20 (29%) | 7 (43.8%) | 3 (17.6%) | ||
AMI | 20 (29%) | 2 (12.5%) | 8 (47.1%) | ||
Statin | 41 (59.4%) | 9 (56.3%) | 7 (41.2%) | 0.27 | |
Beta blockers | 17 (24.6%) | 7 (43.8%) | 5 (29.4%) | 0.39 | |
Calcium antagonists | 26 (37.7%) | 9 (56.3%) | 7 (41.2%) | 0.65 | |
ACE-I | 16 (23.2%) | 5 (31.3%) | 4 (23.5%) | 0.94 | |
ARB | 20 (29%) | 4 (25%) | 8 (47.1%) | 0.28 | |
EF | 62.9 ± 11.6 | 64.0 ± 13.7 | 55.0 ± 14.7 | 0.061 | |
Cholesterol, mg/dL | 189.5 ± 32.6 | 192.7 ± 39.8 | 189.4 ± 47.3 | 0.95 | |
HDL-cholesterol, mg/dL | 49.4 ± 12.6 | 47.4 ± 12.6 | 45.3 ± 18.3 | 0.61 | |
LDL-cholesterol, mg/dL | 121.9 ± 31.1 | 116.2 ± 13.4 | 114.8 ± 26.3 | 0.85 | |
Angiographic data: | |||||
Stented vessel | 0.37 | ||||
LAD | 40 (58%) | 11 (68.8%) | 8 (47.1%) | ||
LCX | 13 (18.8%) | 4 (25%) | 3 (17.6%) | ||
RCA | 16 (23.2%) | 1 (6.3%) | 6 (35.3%) | ||
ACC/AHA lesion type | 0.45 | ||||
A | 31 (44.9%) | 8 (50%) | 9 (52.9%) | ||
B | 31 (44.9%) | 8 (50%) | 8 (47.1%) | ||
C | 7 (10.1%) | 0 | 0 | ||
Lesion length, mm | 11.3 ± 6.4 | 9.4 ± 3.8 | 8.8 ± 3.2 | 0.18 | |
Reference diameter, mm | 3.1 ± 0.6 | 3.1 ± 0.7 | 3.3 ± 0.7 | 0.45 | |
MLD, mm | 0.8 ± 0.3 | 0.8 ± 0.3 | 1.0 ± 0.2 | 0.15 | |
DS% | 74.1 ± 16.3 | 71.2 ± 14.9 | 70.9 ± 6.9 | 0.65 | |
Deployment pressure, atm | 16.7 ± 3.2 | 15.1 ± 3.4 | 16.1 ± 2.8 | 0.19 | |
High pressure stenting, >16 atm | 49 (71%) | 7 (43.8%) | 10 (58.8%) | 0.105 | |
Post-stent baloon dilatation | 20 (29%) | 2 (12.5%) | 4 (23.5%) | 0.49 | |
IVUS data: | |||||
Reference VA, mm2 | 15.4 ± 3.8 | 14.9 ± 3.3 | 17.4 ± 4.6 | 0.26 | |
Reference LA, mm2 | 9.3 ± 2.2 | 8.9 ± 2.6 | 10.8 ± 2.8 | 0.14 | |
Proximal site VA, mm2 | 16.6 ± 5.0* | 17.0 ± 4.3 | 21.7 ± 4.8 | 0.02 | |
Proximal site LA, mm2 | 8.7 ± 3.2 | 9.0 ± 2.6 | 11.0 ± 4.3 | 0.15 | |
Proximal site PMA, mm2 | 7.9 ± 3.2 | 8.0 ± 2.8 | 10.7 ± 4.3 | 0.064 | |
Lesion VA, mm2 | 13.2 ± 4.0* | 14.3 ± 4.0 | 17.6 ± 5.0 | 0.004 | |
Lesion LA, mm2 | 4.0 ± 1.9* | 4.4 ± 1.9 | 5.7 ± 2.0 | 0.016 | |
Lesion PMA, mm2 | 9.2 ± 3.4 | 9.9 ± 3.3 | 11.9 ± 5.2 | 0.063 | |
Distal site VA, mm2 | 10.8 ± 3.4* | 12.0 ± 3.9 | 15.6 ± 3.2 | <0.001 | |
Distal site LA, mm2 | 6.1 ± 2.1 | 6.5 ± 2.0 | 6.9 ± 2.2 | 0.45 | |
Distal site PMA, mm2 | 4.7 ± 2.4* | 5.5 ± 2.8 | 8.8 ± 2.9 | <0.001 | |