Background
Methods
Study population
Exercise stress protocol and image acquisition sequence
Automated quantification of perfusion
The non-invasive cardiac system
Statistics
Results
Parameter | All patients N-198 | Myocardial ischemia ≤10% - N 188 | > 10% - N 10 | P value |
---|---|---|---|---|
Myocardial ischemia (%) | 2.4 ± 3.8% | 1.8 ± 2.6% | 14.4 ± 3.5% | > 0.001 |
Age (year), mean ± SD | 61.8 ± 9.4 | 61.9 ± 9.4 | 60.4 ± 9.3 | 0.636 |
Male, n (%) | 147 (74) | 137 (72) | 10 (100) | 0.166 |
BMI (kg/m2), mean ± SD | 27.5 ± 3.6 | 27.4 ± 3.5 | 29.5 ± 4.8 | 0.08 |
Diabetes mellitus, n (%) | 58 (29.3) | 54 (28.7) | 3 (30) | 0.923 |
Hypertension, n (%) | 106 (53.5) | 98 (52.1) | 7 (70) | 0.265 |
Smoking, n (%) | 31 (15.7) | 30 (16.0) | 1 (10) | 0.620 |
Dyslipidemia, n (%) | 135 (68.2) | 128 | 6 (60) | 0.615 |
MI, n (%) | 44 (22.2) | 39 (20.7) | 4 (40) | 0.149 |
PTCA, n (%) | 35 (17.7) | 31 (16.5) | 3 (30) | 0.268 |
CABG, n (%) | 10 (5.1) | 9 (4.8) | 1 (10) | 0.894 |
PVD, n (%) | 5 (2.5) | 5 (2.7) | 0 | 0.605 |
TIA, n (%) | 1 (0.5) | 1 (0.5) | 0 | 0.819 |
Beta Blocker, n (%) | 52 (26.0) | 50 (26.6) | 2 (20) | 0.653 |
Parameter | All patients | Myocardial ischemia ≤10% | > 10% | P value |
---|---|---|---|---|
SBP (mmHg), mean ± SD | 157 ± 21 | 157 ± 21 | 154 ± 24 | 0.729 |
DBP (mmHg), mean ± SD | 85 ± 10 | 85 ± 11 | 87 ± 9 | 0.967 |
MAP (mmHg), mean ± SD | 108 ± 12 | 108 ± 12 | 109 ± 13 | 0.708 |
HR (beats/s), mean ± SD | 72 ± 12 | 73 ± 12 | 69 ± 6 | 0.398 |
SI (ml/m2), mean ± SD | 37.2 ± 6.7 | 37.0 | 39.4 ± 6.1 | 0.271 |
SWI (J/m2), mean ± SD | 0.50 ± 0.10 | 0.49 | 0.54 | 0.156 |
CI (l/min/m2), mean ± SD | 2.70 ± 0.63 | 2.69 | 2.77 | 0.798 |
CPI (W/m2), mean ± SD | 0.60 ± 0.15 | 0.59 | 0.63 | 0.506 |
TPRI (Dyn*S/cm5*m2), mean ± SD | 3163 ± 905 | 3171 | 3012 | 0.591 |
GGI, mean ± SD | 12.9 ± 3.5 | 13.0 | 11.3 ± | 0.133 |
Parameter | Myocardial Ischemia ≤10% | > 10% | P Value |
---|---|---|---|
METS | 9.9 (9.5, 10.2) | 11.2 (10.3, 12.0) | 0.104 |
Time to target HR | 08:38 (08:17, 08:58) | 09:59 (08:56, 11:02) | 0.074 |
Max. HR achieved | 147 (145, 149) | 143 (137, 149) | 0.256 |
ΔSBP (mmHg) | 12.5% (10.8, 14.2%) | 6.9% (1.3, 12.4%) | 0.146 |
ΔDBP (mmHg) | 5.2% (3.4, 7.0%) | 7.9% (1.3, 14.6%) | 0.499 |
ΔMAP (mmHg) | 8.4% (7.0, 9.7%) | 7.8% (2.9, 12.6%) | 0.764 |
ΔHR (beats/s)a | 60.0% (55.4, 64.6%) | 48.7% (26.7, 70.7%) | 0.281 |
ΔSI (ml/m2) | 19.2% (15.2, 23.2%) | −2.7% (−8.2, 2.7%) | 0.015 |
ΔSWI (J/m2) | 29.1% (24.4, 33.8%) | 3.8% (−5.6, 13.3%) | 0.017 |
ΔCI (l/min/m2) | 90.5% (81.8, 99.2%) | 43.7% (22.1, 65.3%) | 0.040 |
ΔCPI (W/m2) | 107% (97.2, 117%) | 53.5% (33.7, 73.3%) | 0.016 |
ΔTPRI | −38.7% (−41.0, −36.4%) | −16.3% (−30.7, −1.8%) | < 0.001 |
ΔGGI | 22.2% (16.7, 27.6%) | 3.8% (−3.1, 10.6%) | 0.132 |