Table 1. Characteristics of patients according to the results of βreserve and MBFR.
| Variables | Normal β | Abnormal β 1 CAT | Abnormal β ≥ 2 CAT |
| Age (years) | 57.5±8.3 | 59.6±9.0 | 59.9±9.1 |
| Male | 43(46.2%) | 19(55.9%) | 29(70.7%)† |
| ≥3 risk factors | 57(61.3%) | 27(79.4%) | 23(56.1%) |
| Stable angina | 40(43.0%) | 21(61.8%) | 24(58.5%) |
| Previous MI | 6(6.5%) | 5(14.7%) | 17(41.5%)†¶ |
| Diabete Mellitus | 33(35.5%) | 10(29.4%) | 20(48.8%) |
| LVDD | 46±5 | 48±5 | 50±5 |
| LVWT | 10±2 | 10±2 | 10±1 |
| Abnormal WM | 8(8.6%) | 18(52.9%)* | 30(73.2%)† |
| Abnormal QMP | 13(14.0%) | 23(67.6%)* | 35(85.4%)† |
| Events | 2(2.2%) | 2(5.9%) | 13(31.7%)†¶ |
| Variables | Normal MBFR | Abnormal MBFR 1CAT | Abnormal MBFR ≥ 2CAT |
| Age (years) | 58.8±7.8 | 56.2±8.9 | 59.7±9.1 |
| Male | 25(41.0%) | 23(57.5%) | 43(64.2%)† |
| ≥3 risk factors | 37(60.7%) | 26(65.0%) | 44(65.7%) |
| Stable angina | 27(44.3%) | 22(55.0%) | 36(53.7%) |
| Previous MI | 3(4.9%) | 5(12.5%) | 20(29.9%)† |
| Diabetes Mellitus | 21(34.4%) | 13(32.5%) | 29(43.3%) |
| LVDD | 46±5 | 49±5 | 49±5 |
| LVWT | 10±2 | 10±2 | 10±1 |
| Abnormal WM | 3(4.9%) | 12(30.0%)* | 41(61.2%)†¶ |
| Abnormal QMP | 7(11.5%) | 14(35.0%)* | 50(74.6%)†¶ |
| Events | 1(1.6%) | 2(5.0%) | 14(20.9%)† |
CAT = coronary artery territory; MBFR = myocardial blood flow reserve; MI = myocardial infarction; PCI = percutaneous coronary intervention; QMP = qualitative myocardial perfusion; LVDD = left ventricular diastolic diameter; LVWT = left ventricular wall thickness; WM = wall motion.
*p<0.05 between normal reserve and abnormal reserve in 1CAT;
†p<0.05 between normal reserve and abnormal reserve in ≥2 CAT;
¶p<0.05 between abnormal reserve in 1CAT and ≥2 CAT