Table 2.
Baseline angiographic, FFR and lesion characteristics
| FFR(-)DM n = 122 | FFR(-)NonDM n = 128 | p value | |
|---|---|---|---|
| Syntax score, mean ± SD | 8.71 ± 6.43 | 8.68 ± 5.46 | 0.75 |
| Low scores (0–22), % (n) | 80.3 (98) | 89.8 (115) | 0.03 |
| Intermediate scores (23–32), % (n) | 0.8 (1) | 1.6 (2) | >0.99 |
| High scores (≥33), % (n) | 1.6 (2) | 0.8 (1) | 0.62 |
| Unclassified, prior CABG, % (n) | 17.2 (21) | 7.8 (10) | 0.02 |
| FFR performed in one lesion, % (n) | 77 (94) | 70.3 (90) | 0.23 |
| FFR performed in two lesions % (n) | 17.2 (21) | 25 (32) | 0.13 |
| FFR performed in three lesions, % (n) | 5.7 (7) | 4.7 (6) | 0.71 |
| FFR result, mean ± SD | 0.88 ± 0.05 | 0.88 ± 0.05 | 0.24 |
| Lesion characteristics: at lesion level | n = 157 | n = 172 | |
| AHA/ACC lesion type classification: | |||
| Type A, % (n) | 14.6 (23) | 23.8 (41) | 0.02 |
| Type B1, % (n) | 51 (80) | 54.1 (93) | 0.91 |
| Type B2, % (n) | 25.5 (40) | 19.2 (33) | 0.17 |
| Type C, % (n) | 8.9 (14) | 2.9 (5) | 0.07 |
| Calcified lesion, % (n) | 19.7 (31) | 18.6 (32) | 0.94 |
| Diffuse disease, % (n) | 22.3 (35) | 11 (19) | 0.03 |
| Reference vessel diametera, mean ± SD (mm) | 2.98 ± 0.45 | 3.02 ± 0.44 | 0.41 |
| Percentage of diameter stenosisa, mean ± SD | 58.79 ± 8.3 | 59.07 ± 7.0 | 0.47 |
FFR fractional flow reserve, AHA American Heart Association, ACC American College of Cardiology, CABG coronary artery bypass graft
aVisual assessment