Table 5. Myocardial perfusion and function results among the groups with different severity of CHD.
| Project | Group 1 (normal) | Group 2 (mild CHD) | Group 3 (moderate CHD) | Group 4 (severe CHD) | P value |
|---|---|---|---|---|---|
| No. of subjects | 412 | 288 | 200 | 100 | – |
| MBF (mL/min/g) | 1.24±0.18 | 1.12±0.16 | 0.98±0.14 | 0.84±0.12 | <0.05 |
| MBV (mL/g) | 0.14±0.02 | 0.13±0.02 | 0.11±0.02 | 0.09±0.02 | <0.05 |
| LVEF (%) | 66.4±4.2 | 62.8±4.6 | 58.6±5.1 | 53.4±5.6 | <0.05 |
| RWMA | 0 | 0.2±0.4 | 0.6±0.5 | 1.2±0.7 | <0.05 |
Data are presented as mean ± standard deviation or number. CHD, coronary heart disease; MBF, myocardial blood flow; MBV, myocardial blood volume; LVEF, left ventricular ejection fraction; RWMA, regional wall motion abnormality.