Table 4.
Influence of atherosclerotic plaque remodelling on mechanisms of lumen enlargement
| Direct stenting (n=30) | Predilatation stenting (n=30) | |||||
| +R | −R | p Value | +R | −R | p Value | |
| n (%) | 9 (30) | 21 (70) | 12 (40) | 18 (60) | ||
| Proximal reference (5 mm) | ||||||
| Lumen volume (mm3) | 1.8 (4.1) | 3.7 (1.7) | 0.28 | 3.2 (6.1) | 4.2 (7.9) | 0.69 |
| EEM volume (mm3) | 5.2 (7.4) | 1.1 (3.8) | 0.03 | −0.5 (8.5) | 2.7 (8.7) | 0.33 |
| P+M volume (mm3) | 3.4 (6.1) | −2.9 (4.0) | 0.02 | −3.6 (7.9) | −1.5 (5.3) | 0.38 |
| Stent (13 mm) | ||||||
| Lumen volume (mm3) | 61.9 (25.2) | 44.6 (13.8) | 0.02 | 46.2 (21.8) | 49.8 (25.1) | 0.69 |
| EEM volume (mm3) | 41.8 (27.1) | 30.4 (14.6) | 0.14 | 25.4 (18.3) | 39.00 (27.7) | 0.14 |
| P+M volume (mm3) | −20.1 (14.8) | −14.1 (11.0) | 0.22 | −20.8 (18.2) | −10.8 (13.3) | 0.09 |
| Distal reference (5 mm) | ||||||
| Lumen volume (mm3) | 9.2 (8.0) | 3.3 (7.5) | 0.06 | 6.1 (6.9) | 6.4 (6.3) | 0.88 |
| EEM volume (mm3) | 4.3 (7.4) | 2.2 (8.6) | 0.52 | 6.7 (7.6) | 4.9 (6.4) | 0.48 |
| P+M volume (mm3) | −4.8 (6.5) | −1.1 (4.2) | 0.07 | 0.6 (1.8) | −1.5 (4.1) | 0.10 |
| Total length (23 mm) | ||||||
| Lumen volume (mm3) | 72.9 (29.5) | 51.6 (20.6) | 0.03 | 55.4 (31.3) | 60.4 (34.0) | 0.68 |
| EEM volume (mm3) | 52.4 (26.7) | 33.5 (16.5) | 0.04 | 31.6 (16.3) | 46.6 (21.6) | 0.08 |
| P+M volume (mm3) | −21.6 (22.5) | −18.2 (13.1) | 0.60 | −23.8 (81.0) | −13.8 (6.1) | 0.03 |
Values are mean (SD).
EEM, external elastic membrane; P+M, plaque plus media; +R/−R, positive/negative remodelling.