Table 3.
Lesion characteristics, procedural data, and FD-OCT analysis at PCI
| Parameters | Total (n = 30) | BP-EES (n = 15) | DP-EES (n = 15) | P-value |
|---|---|---|---|---|
| Lesion length, mm | 27.1 (19.0–36.6) | 26.2 (19.6–35.2) | 29.6 (21.4–36.7) | 0.494 |
| Minimal lumen area, mm2 | 1.60 (1.36–2.08) | 1.60 (1.52–2.25) | 1.70 (1.28–2.05) | 0.835 |
| Reference vessel diameter, mm | 2.57 (2.29–2.86) | 2.56 (2.29–2.81) | 2.57 (2.30–2.96) | 0.917 |
| Calcium arc, ° | 293.8 (253.8–326.0) | 301.0 (291.4–349.8) | 268.5 (242.5–301.8) | 0.088 |
| Maximum calcium thickness, mm | 1.35 (1.15–1.60) | 1.41 (1.20–1.67) | 1.34 (1.13–1.48) | 0.345 |
| Atherectomy device | ||||
| Rotational | 26 (86.7) | 14 (93.3) | 12 (80.0) | 0.598 |
| Orbital | 4 (13.3) | 1 (6.7) | 3 (20.0) | |
| Number of stents | 1 (1–1) | 1 (1–2) | 1 (1–1) | 0.386 |
| Distal stent diameter, mm | 3.00 (2.75–3.00) | 3.00 (2.75–3.25) | 3.00 (2.75–3.00) | 0.441 |
| Total stent length, mm | 32 (23–38) | 24 (22–46) | 33 (29–38) | 0.479 |
| Final TIMI flow grade | 3 (3–3) | 3 (3–3) | 3 (3–3) | 0.164 |
| Minimal stent area, mm2 | 5.64 (4.52–6.85) | 6.07 (5.51–7.11) | 4.89 (4.10–5.88) | 0.045 |
| Analyzed cross-section | 956 | 488 | 468 | – |
| Analyzed cross-section per patient | 31 (24–38) | 28 (24–38) | 33 (25–37) | 0.901 |
| Aanalyzable cross-section | 928 | 479 | 449 | – |
| Aanalyzable cross-section per patient | 29 (24–37) | 28 (23–37) | 29 (25–36) | 0.917 |
| Analyzable struts | 6234 | 3053 | 3181 | – |
| Analyzable struts per patient | 200 (140–268) | 189 (136–263) | 226 (151–270) | 0.575 |
| Analyzable struts/cross-section | 6.6 (5.5–7.6) | 5.9 (5.5–6.9) | 6.8 (6.4–7.9) | 0.161 |
| Mean S–V distance, μm | 72 (50–101) | 68 (47–103) | 78 (57–100) | – |
| Malapposed struts | 401 | 243 | 158 | – |
| Malapposed struts per patient | 10 (3–14) | 10 (7–19) | 6 (3–14) | 0.271 |
| S–V distance of malapposed struts, μm | 289 (237–392) | 295 (242–394) | 282 (233–360) | – |
| Plaque morphology behind the malapposed struts | ||||
| Mod-Ca | 92 (22.9) | 49 (20.2) | 43 (27.2) | 0.053 |
| Ca-Fx | 27 (6.9) | 11 (4.5) | 17 (10.8) | |
| A-Ca | 63 (16.1) | 38 (15.6) | 26 (16.5) | |
| Non-mod-Ca | 107 (26.7) | 60 (24.7) | 47 (29.7) | |
| Non-Ca | 202 (50.4) | 134 (55.1) | 68 (43.0) | |
Data presented as n (%), interquartile range (25%–75%)
S–V distance stent–umen distance, Mod-Ca modified calcium, Ca-Fx fractured calcium, A-Ca atherectomy calcium, Non-mod-Ca non-modified calcium, non-Ca non-calcium