Heart rate (beats per minute) | 77±16 | 76±20 | 78±12 | 0.545 |
Systolic blood pressure (mm Hg) | 122±21 | 121±20 | 124±22 | 0.540 |
Diastolic blood pressure (mm Hg) | 66±12 | 66±11 | 67±12 | 0.578 |
Left ventricular end-diastolic pressure (mm Hg) | 11±6 | 11±6 | 11±6 | 0.898 |
Left ventricular ejection fraction (%) | 63±8 | 64±7 | 63±8 | 0.552 |
Coronary angiographic parameters |
No of diseased vessels | 1.81±0.94 | 1.50±0.99 | 2.10±0.84 | 0.001 |
No of coronary lesions (visually relevant) | 1.83±1.60 | 1.21±1.21 | 2.38±1.68 | <0.001 |
Target vessel distribution |
Left anterior descending, n | 55 | 23 | 32 | 0.362 |
Left circumflex coronary artery, n | 24 | 14 | 10 |
Right coronary artery, n | 21 | 11 | 10 |
Study parameters |
Maximum heart rate achieved (beats per minute) | 150±16 | 149±18 | 151±13 | 0.508 |
Maximal heart rate in % of theoretical maximal heart rate (220-age) | 98±11 | 98±12 | 98±10 | 0.705 |
Quantitative coronary angiography of the lesion of interest (%) | 53±17 | 39±6 | 66±12 | – |
Fractional flow reserve | 0.798±0.143 | 0.887±0.073 | 0.716±0.143 | <0.001 |
Instantaneous wave-free ratio | 0.812±0.209 | 0.922±0.052 | 0.710±0.245 | <0.001 |
Intracoronary ECG ST-segment shift measured @ J-Point +60 ms (mV) within 1 min after maximal heart rate | 0.965±1.324 | 0.545±0.892 | 1.352±1.533 | 0.002 |
Collateral flow index | 0.118±0.100 | 0.083±0.070 | 0.148±0.113 | 0.001 |