Table 3.
Poststent Intravascular Ultrasound Findings
| Lesions With Acute Malapposition (N=308 Lesions) | Lesions Without Acute Malapposition (N=2138 Lesions) | P Value | |
|---|---|---|---|
| Lesion location | |||
| Left anterior descending artery | 39.9 (123) | 41.6 (890) | 0.56 |
| Right coronary artery | 38.3 (118) | 30.8 (658) | 0.008 |
| Left circumflex artery | 17.5 (54) | 21.7 (465) | 0.09 |
| Left main coronary artery | 1.9 (6) | 2.5 (54) | 0.53 |
| Saphenous vein graft | 2.3 (7) | 3.3 (71) | 0.48 |
| Stent segment | |||
| Minimum lumen area, mm2 | 6.5 (6.3–6.8) | 6.2 (6.1–6.3) | 0.01 |
| Minimum stent area, mm2 | 6.5 (6.2–6.8) | 6.2 (6.1–6.3) | 0.04 |
| Mean lumen area, mm3/mm | 8.3 (8.0–8.6) | 7.6 (7.5–7.7) | 0.0001 |
| Mean stent area, mm3/mm | 8.1 (7.8–8.4) | 7.7 (7.5–7.8) | 0.01 |
| Mean EEM area, mm3/mm | 18.0 (17.4–18.7) | 15.9 (15.6–16.1) | <0.0001 |
| Mean plaque area, mm3/mm | 10.0 (9.6–10.4) | 8.2 (8.1–8.4) | <0.0001 |
| Attenuated plaque behind stent | 73.7 (227) | 61.0 (1304) | <0.0001 |
| Tissue protrusion | 35.4 (109) | 34.2 (731) | 0.70 |
| Reference segment | |||
| Proximal lumen area, mm2 | 12.6 (12.0–13.2) | 9.8 (9.6–10.0) | <0.0001 |
| Distal lumen area, mm2 | 8.8 (9.3–9.3) | 7.6 (7.4–7.7) | <0.0001 |
| Calcification at proximal reference | 54.1 (150) | 46.7 (899) | 0.14 |
| Calcification at distal reference | 36.8 (109) | 28.0 (583) | 0.002 |
| Edge dissection | 4.5 (14) | 6.9 (147) | 0.13 |
Values are % (n) or least‐squares means (95% CI). EEM indicates external elastic membrane.