Table 2.
Luminal calibers of all 3 coronary arteries according to the frontal planar QRS-T angles
| QRS-T angle 0 – 45° (n = 235) | QRS-T angle 45–90° (n = 41) | QRS-T angle>90° (n = 31) | All patients (n = 307) | p value | |
|---|---|---|---|---|---|
| LMCA mean diameter, mm | 4.13± 0.57 | 4.20 ± 0.61 | 4.51 ± 0.78 | 4.18± 0.61 | 0.004 |
| LAD proximal mean diameter, mm | 3.30± 0.50 | 3.26 ± 0.48 | 3.54 ± 0.42 | 3.32± 0.49 | 0.028 |
| LAD distal mean diameter, mm | 2.59± 0.44 | 2.59 ± 0.42 | 2.79 ± 0.42 | 2.61± 0.44 | 0.051 |
| CFX mean diameter, mm | 3.10± 1.20 | 3.04 ± 0.54 | 3.21 ± 063 | 3.11 ± 1.08 | 0.787 |
| RCA proximal mean diameter, mm | 3.28 ± 0.69 | 3.17 ± 0.63 | 3.35 ± 0.66 | 3.27± 0.68 | 0.488 |
| RCA distal mean diameter, mm | 2.50± 0.68 | 2.31 ± 0.53 | 2.61 ± 0.69 | 2.48± 0.67 | 0.133 |
LMCA, left main coronary artery; LAD, left anterior descending coronary artery; CFX, circumflex artery; RCA, right coronary artery.