Table 4.
Comparison of regional quantitative perfusion measurements between LAD-MB and patients without LAD-MB
Variable | Patients with LAD-MB (n = 17) | Patients without LAD-MB (n = 114) | p value |
---|---|---|---|
LAD | |||
Rest MBF (ml/g/min) | 1.2 ± 0.3 | 1.0 ± 0.2 | 0.005 |
Stress MBF (ml/g/min) | 2.3 ± 0.5 | 2.4 ± 0.7 | 0.73 |
MPR | 2.0 ± 0.4 | 2.4 ± 0.7 | 0.001 |
LCx | |||
Rest MBF (ml/g/min) | 1.3 ± 0.3 | 1.1 ± 0.3 | 0.001 |
Stress MBF (ml/g/min) | 2.3 ± 0.5 | 2.4 ± 0.7 | 0.61 |
MPR | 1.8 ± 0.4 | 2.4 ± 0.7 | < 0.001 |
RCA | |||
Rest MBF (ml/g/min) | 1.1 ± 0.3 | 1.0 ± 0.3 | 0.02 |
Stress MBF (ml/g/min) | 1.8 ± 0.5 | 2.1 ± 0.7 | 0.13 |
MPR | 1.7 ± 0.8 | 2.2 ± 0.7 | 0.006 |
Values are mean ± standard deviation
LAD left anterior descending artery, LCx left circumflex artery, MB myocardial bridging, MBF myocardial blood flow, MPR myocardial perfusion reserve, RCA right coronary artery